I have an almost similar problem (to this one).
I have no knowledge of Processwire, I have extensive knowledge of Dreamweaver. The site www.Vivesport.co.uk was made by someone else whom I now cannot contact. I moved it to another host. It cannot then be viewed, displaying:
"Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Error has been logged."
A host engineer said:
"It seems the site was written for legacy php so you will likely need to update the site to make it compatible with php7.
The .htaccess file was also causing some trouble, we have disabled it and now you can view the .txt files on the site."
Processwire appears to be version
2.7.
I have extensively researched other post and help topics but I cannot make sense of them. I've downloaded both ProcessWireUpgrade-master & processwire-master. It is not clear what to do with them - I cannot access anything via the site because of the above message.
Any suggestions, please.