Hello,

The upgrade feature from forum used to work well but for the last few months, I am not able to do it. Any suggestion?

 

Thanks.

The most common issue here is that your server is unable to write (or overwrite) to the files in your directory. This can be a case of permissions being wrong or the user/group ownership is incorrect for your web server. There are also some wonky issues that hosting providers have found in the past where transferring the file from /tmp to the directory was not working. Ultimately, what I am telling you here is that the issue is on the hosting side and you'll want to contact your hosting provider to properly investigate this and resolve the issue.