Every time we log out, we see this error.

Its the same in the slightly modified template and in stock (blue color template). So it seems like a system issue, we are facing.

Can anyone please advise how to fix it.

It seems that you’re still using Ipsconnect, which was deprecated years ago in IPS 4.3 and replaced with oAuth.

 

 

Thanks @Daniel F for prompt reply, we are on IPS 4.7.14.

How did we miss this? Or were there any manual changes required that we have missed by relying on auto update setup?

Please advise, how we can fix this issue now.

We had the same discussion  mention 3 months ago.