Tethering keeps breaking

Can anyone explain why tethering keeps stopping. Attached a picture of log.
This technology is advanced for my level of knowledge

This should not affect the specific use, what is the specific problem you encountered?

the specific problem is the internet connection is lost. I have to re tether and it works for 5 minutes and then disconnects again

What is the model of your device? And what firmware version are your router using?