Many log data after 4.4.5 (axt1800 & mt2500)

CRontab is located in OpenWRT UI. Go to advance settings and log into UI, ounce there click the Systems Tab and go to schedule tasks. (More then likely there is nothing there) like wcs2228 suggested you will need to play with the settings of the Multi-WAN (mwan3) in the GL.iNet UI.

Scheduled Tasks is empty , MultiWan is Disabled

Did try you save settings log out log back in and reboot
mine has the same errors does it every 30 Sec

Multi-WAN is still enabled. For each WAN connection, only the interval/number of tries settings can be changed in the “gear” icon on the right side. I think the mwan3 service would have to be turned off from starting up to disable it, but I do not know if that would break something else.

It appears that the log messages are “normal” with Firmware 4.4.5 because I did not upgrade my GL-MT2500 and do not get the log messages. Personally, I would just leave them alone and ignore the messages.

The prompt message “Sun Aug 27 13:10:00 2023 cron.err crond[4002]: USER root pid 10246 cmd ./lib/functions/modem.sh;check_ip” itself is not an error, but a problem with the loglevel setting of cron (it It should be an INFO level information), we have fixed this problem in the current firmware, but we need to upgrade it without saving the configuration, or reset after the upgrade; of course, it can also be fixed by manually entering the following command in the device background:
uci set system.@system[0].cronloglevel=“10”
/etc/init.d/gl_timer restart

1 Like

Hi @SimBot
My AXT1800 responds to this command:

root@router:~# /etc/init.d/gl_timer restart
validation failed

From “root@router” it looks like your firmware is not glinet’s standard firmware

@luxibao
I’ve just edited the host name.

Please show me this page of luci for your device.And use the command to check the device configuration. cat /etc/config/system

@SimBot

Hi!
I rebooted my router after the command: uci set system.@system[0].cronloglevel="10".
After the reboot, there is no mention of cron.err crond in the logs anymore.
Just want to let you know that the command /etc/init.d/gl_timer restart doesn’t work.

Thank you!


BusyBox v1.33.2 (2023-08-11 11:07:43 UTC) built-in shell (ash)

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------
 OpenWrt 21.02-SNAPSHOT, r15812+879-46b6ee7ffc
 -----------------------------------------------------
root@GL-MT2500:~# uci set system.@system[0].cronloglevel=“10”
root@GL-MT2500:~# /etc/init.d/gl_timer restart
validation failed
root@GL-MT2500:~#

its Standard Firmware
“etc/init.d/gl_timer restart
validation failed”

Hi! Please try again.

uci set system.@system[0].cronloglevel="10"
uci commit system
uci show system
/etc/init.d/gl_timer restart
1 Like

I am having the same issue with the new MT-6000. Is this fixed with the latest firmware and do I need to follow the same procedure?

ModelGL.iNet GL-MT6000 4.5.6
Architecture ARMv8 Processor rev 4
OpenWrt Version OpenWrt 23.05-SNAPSHOT r23001+721-38c150612c
Kernel Version 5.15.139

ue Jan 23 19:19:00 2024 cron.err crond[4212]: USER root pid 8876 cmd . /lib/functions/modem.sh;check_ip
Tue Jan 23 19:19:00 2024 cron.err crond[4212]: USER root pid 8877 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Tue Jan 23 19:20:00 2024 cron.err crond[4212]: USER root pid 9102 cmd . /lib/functions/modem.sh;check_ip
Tue Jan 23 19:20:00 2024 cron.err crond[4212]: USER root pid 9103 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Tue Jan 23 19:20:00 2024 cron.err crond[4212]: USER root pid 9104 cmd . /lib/functions/modem.sh;modem_net_monitor
Tue Jan 23 19:21:00 2024 cron.err crond[4212]: USER root pid 9331 cmd . /lib/functions/modem.sh;check_ip
Tue Jan 23 19:21:00 2024 cron.err crond[4212]: USER root pid 9332 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Tue Jan 23 19:22:00 2024 cron.err crond[4212]: USER root pid 9557 cmd . /lib/functions/modem.sh;check_ip
Tue Jan 23 19:22:00 2024 cron.err crond[4212]: USER root pid 9558 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Tue Jan 23 19:22:00 2024 cron.err crond[4212]: USER root pid 9559 cmd . /lib/functions/modem.sh;modem_net_monitor
Tue Jan 23 19:23:00 2024 cron.err crond[4212]: USER root pid 9784 cmd . /lib/functions/modem.sh;check_ip
Tue Jan 23 19:23:00 2024 cron.err crond[4212]: USER root pid 9785 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Tue Jan 23 19:24:00 2024 cron.err crond[4212]: USER root pid 10078 cmd . /lib/functions/modem.sh;check_ip
Tue Jan 23 19:24:00 2024 cron.err crond[4212]: USER root pid 10079 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Tue Jan 23 19:24:00 2024 cron.err crond[4212]: USER root pid 10080 cmd . /lib/functions/modem.sh;modem_net_monitor
Tue Jan 23 19:25:00 2024 cron.err crond[4212]: USER root pid 10277 cmd . /lib/functions/modem.sh;check_ip
Tue Jan 23 19:25:00 2024 cron.err crond[4212]: USER root pid 10278 cmd sleep 30;. /lib/functions/modem.sh;check_ip

Did you try this?

 -----------------------------------------------------
 OpenWrt 23.05-SNAPSHOT, r23001+721-38c150612c
 -----------------------------------------------------
root@GL-MT6000:~# uci set system.@system[0].cronloglevel="10"
root@GL-MT6000:~# uci commit system
root@GL-MT6000:~# uci show system
system.@system[0]=system
system.@system[0].hostname='GL-MT6000'
system.@system[0].timezone='EET-2EEST,M3.5.0/3,M10.5.0/4'
system.@system[0].ttylogin='1'
system.@system[0].log_size='64'
system.@system[0].urandom_seed='0'
system.@system[0].compat_version='1.0'
system.@system[0].cronloglevel='10'
system.@system[0].zonename='Europe/Bucharest'
system.@system[0].log_proto='udp'
system.@system[0].conloglevel='8'
system.ntp=timeserver
system.ntp.server='0.openwrt.pool.ntp.org' '1.openwrt.pool.ntp.org' '2.openwrt.p                                ool.ntp.org' '3.openwrt.pool.ntp.org'
root@GL-MT6000:~# /etc/init.d/gl_timer restart
root@GL-MT6000:~#

So please wait a day or two and check if the log noise stopped.

I will wait, thank you!

The problem has not been solved until now, the logs persist even in the latest Beta version 4.5.8!

Hostname
GL-MT6000
Model
GL.iNet GL-MT6000
Architecture
ARMv8 Processor rev 4
OpenWrt Version
OpenWrt 21.02-SNAPSHOT r15812+1071-46b6ee7ffc
Kernel Version
5.4.238
Thu Mar 28 18:55:00 2024 cron.err crond[4987]: USER root pid 8369 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 18:55:00 2024 cron.err crond[4987]: USER root pid 8370 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 18:56:00 2024 cron.err crond[4987]: USER root pid 8596 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 18:56:00 2024 cron.err crond[4987]: USER root pid 8597 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 18:56:00 2024 cron.err crond[4987]: USER root pid 8598 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 18:57:00 2024 cron.err crond[4987]: USER root pid 8822 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 18:57:00 2024 cron.err crond[4987]: USER root pid 8823 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 18:58:00 2024 cron.err crond[4987]: USER root pid 9047 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 18:58:00 2024 cron.err crond[4987]: USER root pid 9048 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 18:58:00 2024 cron.err crond[4987]: USER root pid 9049 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 18:59:00 2024 cron.err crond[4987]: USER root pid 9281 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 18:59:00 2024 cron.err crond[4987]: USER root pid 9282 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:00:00 2024 cron.err crond[4987]: USER root pid 9493 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:00:00 2024 cron.err crond[4987]: USER root pid 9494 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:00:00 2024 cron.err crond[4987]: USER root pid 9495 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:01:00 2024 cron.err crond[4987]: USER root pid 9719 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:01:00 2024 cron.err crond[4987]: USER root pid 9720 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:02:00 2024 cron.err crond[4987]: USER root pid 9951 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:02:00 2024 cron.err crond[4987]: USER root pid 9952 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:02:00 2024 cron.err crond[4987]: USER root pid 9953 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:03:00 2024 cron.err crond[4987]: USER root pid 10177 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:03:00 2024 cron.err crond[4987]: USER root pid 10178 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:04:00 2024 cron.err crond[4987]: USER root pid 10402 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:04:00 2024 cron.err crond[4987]: USER root pid 10403 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:04:00 2024 cron.err crond[4987]: USER root pid 10404 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:05:00 2024 cron.err crond[4987]: USER root pid 10628 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:05:00 2024 cron.err crond[4987]: USER root pid 10629 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:06:00 2024 cron.err crond[4987]: USER root pid 10853 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:06:00 2024 cron.err crond[4987]: USER root pid 10854 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:06:00 2024 cron.err crond[4987]: USER root pid 10855 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:07:00 2024 cron.err crond[4987]: USER root pid 11080 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:07:00 2024 cron.err crond[4987]: USER root pid 11081 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:08:00 2024 cron.err crond[4987]: USER root pid 11313 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:08:00 2024 cron.err crond[4987]: USER root pid 11314 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:08:00 2024 cron.err crond[4987]: USER root pid 11315 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:09:00 2024 cron.err crond[4987]: USER root pid 11545 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:09:00 2024 cron.err crond[4987]: USER root pid 11546 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:10:00 2024 cron.err crond[4987]: USER root pid 11778 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:10:00 2024 cron.err crond[4987]: USER root pid 11779 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:10:00 2024 cron.err crond[4987]: USER root pid 11780 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:11:00 2024 cron.err crond[4987]: USER root pid 12004 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:11:00 2024 cron.err crond[4987]: USER root pid 12005 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:12:00 2024 cron.err crond[4987]: USER root pid 12229 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:12:00 2024 cron.err crond[4987]: USER root pid 12230 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:12:00 2024 cron.err crond[4987]: USER root pid 12231 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:13:00 2024 cron.err crond[4987]: USER root pid 12456 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:13:00 2024 cron.err crond[4987]: USER root pid 12457 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:14:00 2024 cron.err crond[4987]: USER root pid 12689 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:14:00 2024 cron.err crond[4987]: USER root pid 12690 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:14:00 2024 cron.err crond[4987]: USER root pid 12691 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:15:00 2024 cron.err crond[4987]: USER root pid 12923 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:15:00 2024 cron.err crond[4987]: USER root pid 12924 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:16:00 2024 cron.err crond[4987]: USER root pid 13148 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:16:00 2024 cron.err crond[4987]: USER root pid 13149 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:16:00 2024 cron.err crond[4987]: USER root pid 13150 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:17:00 2024 cron.err crond[4987]: USER root pid 13388 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:17:00 2024 cron.err crond[4987]: USER root pid 13389 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:18:00 2024 cron.err crond[4987]: USER root pid 13613 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:18:00 2024 cron.err crond[4987]: USER root pid 13614 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:18:00 2024 cron.err crond[4987]: USER root pid 13615 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:19:00 2024 cron.err crond[4987]: USER root pid 13839 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:19:00 2024 cron.err crond[4987]: USER root pid 13840 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:20:00 2024 cron.err crond[4987]: USER root pid 14073 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:20:00 2024 cron.err crond[4987]: USER root pid 14074 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:20:00 2024 cron.err crond[4987]: USER root pid 14075 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:21:00 2024 cron.err crond[4987]: USER root pid 14307 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:21:00 2024 cron.err crond[4987]: USER root pid 14308 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:22:00 2024 cron.err crond[4987]: USER root pid 14540 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:22:00 2024 cron.err crond[4987]: USER root pid 14541 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:22:00 2024 cron.err crond[4987]: USER root pid 14542 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:23:00 2024 cron.err crond[4987]: USER root pid 14772 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:23:00 2024 cron.err crond[4987]: USER root pid 14773 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:24:00 2024 cron.err crond[4987]: USER root pid 14997 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:24:00 2024 cron.err crond[4987]: USER root pid 14998 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:24:00 2024 cron.err crond[4987]: USER root pid 14999 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:25:00 2024 cron.err crond[4987]: USER root pid 15231 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:25:00 2024 cron.err crond[4987]: USER root pid 15232 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:26:00 2024 cron.err crond[4987]: USER root pid 15456 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:26:00 2024 cron.err crond[4987]: USER root pid 15457 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:26:00 2024 cron.err crond[4987]: USER root pid 15458 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:27:00 2024 cron.err crond[4987]: USER root pid 15690 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:27:00 2024 cron.err crond[4987]: USER root pid 15691 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:28:00 2024 cron.err crond[4987]: USER root pid 15916 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:28:00 2024 cron.err crond[4987]: USER root pid 15917 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:28:00 2024 cron.err crond[4987]: USER root pid 15918 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:29:00 2024 cron.err crond[4987]: USER root pid 16142 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:29:00 2024 cron.err crond[4987]: USER root pid 16143 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:30:00 2024 cron.err crond[4987]: USER root pid 16375 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:30:00 2024 cron.err crond[4987]: USER root pid 16376 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:30:00 2024 cron.err crond[4987]: USER root pid 16377 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:31:00 2024 cron.err crond[4987]: USER root pid 16601 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:31:00 2024 cron.err crond[4987]: USER root pid 16602 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:32:00 2024 cron.err crond[4987]: USER root pid 16840 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:32:00 2024 cron.err crond[4987]: USER root pid 16841 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:32:00 2024 cron.err crond[4987]: USER root pid 16842 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:33:00 2024 cron.err crond[4987]: USER root pid 17067 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:33:00 2024 cron.err crond[4987]: USER root pid 17068 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:34:00 2024 cron.err crond[4987]: USER root pid 17292 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:34:00 2024 cron.err crond[4987]: USER root pid 17293 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:34:00 2024 cron.err crond[4987]: USER root pid 17294 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:35:00 2024 cron.err crond[4987]: USER root pid 17519 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:35:00 2024 cron.err crond[4987]: USER root pid 17520 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:36:00 2024 cron.err crond[4987]: USER root pid 17731 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:36:00 2024 cron.err crond[4987]: USER root pid 17732 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:36:00 2024 cron.err crond[4987]: USER root pid 17733 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:37:00 2024 cron.err crond[4987]: USER root pid 17965 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:37:00 2024 cron.err crond[4987]: USER root pid 17966 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:38:00 2024 cron.err crond[4987]: USER root pid 18197 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:38:00 2024 cron.err crond[4987]: USER root pid 18198 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:38:00 2024 cron.err crond[4987]: USER root pid 18199 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:39:00 2024 cron.err crond[4987]: USER root pid 18423 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:39:00 2024 cron.err crond[4987]: USER root pid 18424 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:40:00 2024 cron.err crond[4987]: USER root pid 18648 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:40:00 2024 cron.err crond[4987]: USER root pid 18649 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:40:00 2024 cron.err crond[4987]: USER root pid 18650 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:41:00 2024 cron.err crond[4987]: USER root pid 18874 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:41:00 2024 cron.err crond[4987]: USER root pid 18875 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:42:00 2024 cron.err crond[4987]: USER root pid 19107 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:42:00 2024 cron.err crond[4987]: USER root pid 19108 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:42:00 2024 cron.err crond[4987]: USER root pid 19109 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:43:00 2024 cron.err crond[4987]: USER root pid 19342 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:43:00 2024 cron.err crond[4987]: USER root pid 19343 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:44:00 2024 cron.err crond[4987]: USER root pid 19574 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:44:00 2024 cron.err crond[4987]: USER root pid 19575 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:44:00 2024 cron.err crond[4987]: USER root pid 19576 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:45:00 2024 cron.err crond[4987]: USER root pid 19800 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:45:00 2024 cron.err crond[4987]: USER root pid 19801 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:46:00 2024 cron.err crond[4987]: USER root pid 20028 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:46:00 2024 cron.err crond[4987]: USER root pid 20029 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:46:00 2024 cron.err crond[4987]: USER root pid 20030 cmd . /lib/functions/modem.sh;modem_net_monitor
Thu Mar 28 19:47:00 2024 cron.err crond[4987]: USER root pid 20254 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:47:00 2024 cron.err crond[4987]: USER root pid 20255 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:48:00 2024 cron.err crond[4987]: USER root pid 20487 cmd . /lib/functions/modem.sh;check_ip
Thu Mar 28 19:48:00 2024 cron.err crond[4987]: USER root pid 20488 cmd sleep 30;. /lib/functions/modem.sh;check_ip
Thu Mar 28 19:48:00 2024 cron.err crond[4987]: USER root pid 20489 cmd . /lib/functions/modem.sh;modem_net_monitor

I don’t think it gets fixed because you need to recompile cron for it.
These “errors” are because cron decided to use it like that: Cron.err - why? - #6 by salexa - Installing and Using OpenWrt - OpenWrt Forum

Silly but not a big deal anyway. Log is in RAM only, so not even a problem with the flash memory.