luceos you need to install the php extension fileinfo, the error says exactly that? And please don't mention people unnecessarily, see https://discuss.flarum.org/d/859-flarum-community-guidelines
rahul02shah luceos @luceos @SychO @clarkwinkelmann i saw the php version were 7.0 and flarum was 8.1.2 , so i changed to 8.1 even after doing all this not working even user can not upload background image  could you please help me
luceos rahul02shah if you don't respect other people for their time, they wont respect your need for their knowledge. As for the error, I think this relatesto your mail settings. But only if you look at the logs you will know for sure, see https://docs.flarum.org/troubleshoot
rahul02shah luceos have read all this tried and found something error is : Hosting PHP version is 8.1.21 but flarum php verion is 8.1.20 , how to fix this let me know
