RVsitebuilder 7 error 500 when I clicked Edit

If you got error 500 when you click Edit on cPanel control panel, it's mostly that some required environment is dropped or disabled.

Check in error log

File Manager -> rvsitebuildercms -> domain name in question -> storage -> logs -> view the today log file "laravel-20xx-mm-dd.log

sample of error in log file

Solution followed by error log

Go to PHP Selector and enable the "fileinfo" (more of setting here)

Access and click Edit website on Rvsitebuilder 7 again.