this web[ahe has a redirect loop

Only comes up when i try to see messages. or reply to messages and  threads

deleted browser history,cookies etc, but still happening on both laptop and phone?

any ideas

Hi,
Seems to be a chrome browser issue.
Did a quick google for the error and there are loads of pages about the issue.
For example:
Google Product Forums
There are a few other suggestions to try.

Do you see the error in any other browser ?
Are you using chrome on both devices?