Flint3 LUA error when accessing webpanel

Routers
1

Hey all,

I’m a new user of Flint3 (BE9300). I’m running fw 4.8.1.

I played a bit with the Webpanel initially, which was working fine. Then I decided to try out LuCI web interface. When I noticed that LuCI was also exposed on the WAN IP, I decided to uninstall that.

After these steps I cannot login anymore on the Flint3 webpanel… I get the homepage but just after login I get a popup “Unknown error occurred. Please check the network environment or reboot the device.”.

If I tail the /var/log/nginx/error.log from SSH terminal I see:


2025/11/08 00:46:20 [error] 21400#0: *20 connect() to unix:/var/run/ngx-ubus-proxy.sock failed (111: Connection refused), client: 192.168.1.10, server: , request: "POST /rpc HTTP/1.1", host: "192.168.1.254", referrer: "http://192.168.1.254/"
2025/11/08 00:46:20 [error] 21400#0: *20 lua entry thread aborted: runtime error: /usr/share/gl-ngx/oui-rpc.lua:23: attempt to index local 'res' (a nil value)
stack traceback:
coroutine 0:
	/usr/share/gl-ngx/oui-rpc.lua:23: in function '?'
	/usr/share/gl-ngx/oui-rpc.lua:168: in function </usr/share/gl-ngx/oui-rpc.lua:1>, client: 192.168.1.10, server: , request: "POST /rpc HTTP/1.1", host: "192.168.1.254", referrer: "http://192.168.1.254/"

Is this a known error? I’ve seen in some other (older) threads that similar issues in the past were caused by the Lua pkg getting updated. My Lua packages are:

root@OpenWrt-GL-BE9300-Gateway:/etc/nginx/conf.d# opkg list | grep lua
gl-sdk4-lua-utils - git-2025.221.27155-40493f4-1
libiwinfo-lua - 2023-07-01-ca79f641-1
libiwinfo-lua54 - 1
liblua5.1.5 - 5.1.5-10
liblua5.4-5.4 - 5.4.7-1
libubox-lua - 2023-05-23-75a3b870-1
libubus-lua - 2023-06-05-f787c97b-1
libuci-lua - 2023-08-10-5781664d-1
libuci-lua54 - 1
lsqlite3-lua5.4 - 0.9.5-1
lua - 5.1.5-10
lua-cjson - 2.1.0-1
lua-cjson-lua5.4 - 2.1.0-1
lua-eco - 3.11.0-2
lua-eco-base64 - 3.11.0-2
lua-eco-dns - 3.11.0-2
lua-eco-hmac - 3.11.0-2
lua-eco-http - 3.11.0-2
lua-eco-ip - 3.11.0-2
lua-eco-log - 3.11.0-2
lua-eco-md5 - 3.11.0-2
lua-eco-mqtt - 3.11.0-2
lua-eco-netlink - 3.11.0-2
lua-eco-nl80211 - 3.11.0-2
lua-eco-sha256 - 3.11.0-2
lua-eco-socket - 3.11.0-2
lua-eco-ssl - 3.11.0-2
lua-eco-termios - 3.11.0-2
lua-eco-ubus - 3.11.0-2
luabitop - 1.0.2-1

Is Flint3 WebPanel expecting a different Lua version?

Thanks for any hint!

2

Well, since you messed up with the packages, it would be the best to reset the firmware and start over. Luci isn't exposed on the WAN IP usually — how did you check for that?

3

hey @admon ,

thanks for the answer.

Honestly I don’t feel like I “messed up with packages”. I clicked the “Install Luci” button in the Advanced Settings of the WebPanel and then later on I just clicked “Uninstall” from the same place. Although I do have SSH access, I didn’t use “opkg” manually for that exact reason: avoid messing up with packages.

But anyhow. I found the video at Reset Firmware - GL.iNet Router Docs 4 as a possible way to reset without access to the web panel. Would you suggest me to go that path?

Out of curiosity, is there a possibility to switch to a plain vanilla OpenWrt installation? Asking because the LuCI interface / OpenWRT are probably better for advanced users.

>Luci isn't exposed on the WAN IP usually — how did you check for that?

I just pointed my browser to “http://:8080” and Luci interface showed up…

4

You can only check from external - by using a hotspot for example and trying to reach your external IP.

5

Btw I managed to successfully reset my Flint3 and now I can access the webpanel again.

Still if anyone knows it would be interesting for me to know about this:

Out of curiosity, is there a possibility to switch to a plain vanilla OpenWrt installation? Asking because the LuCI interface / OpenWRT are probably better for advanced users.

thanks

6

This won't be possible because Flint 3 is Broadcom based and not supported by vanilla OpenWrt, afaik.

7

I see, that’s a pity but for now I’m all set, thanks.