Error during "sudo apt update"

[GhX6GZMB]

I get this error during update. Can someone point me in the right direction, please?

Thank You.

[Skaperen]

this command makes many connections to several websites. these warnings are saying that some of them failed. try running the command, again, and see if it repeats. scroll the terminal back and capture more messages from earlier if it does it again. there may be basic problems, like failed DNS lookups, happening.

[cruzer001]

Your Opera browser is holding back your updates. Remove it or...

https://forums.opera.com/topic/22315...-not-available

[GhX6GZMB]

@cruzer001:
Thank You, the solution you linked to works perfectly. My apt update and apt upgrade both run perfectly and with neither errors nor warnings.