Safari 'Server stopped responding' issue on iPad mini 6th gen

I have an IPad Mini 6th generation. Recently Safari is generating the message “Server could not open the page because the server stopped responding” when trying to access a variety of websites but the error is not confined to a particular site and it is not consistent. I have tried going to “Settings” and choosing to clear website data and history but I still get the error. I often play videos on YouTube or “My5” but these can sometimes be slow to load and can be subject to unexpected interruptions.

Could this be a problem with my internet provider (I don’t think so as I still receive/send email) or something else?

Any help/suggestions would be much appreciated.

[Re-Titled by Moderator]