Softaculous install of NextCloud seems to run fine, including many of the most basis apps; but I can not launch the mail app at all. The instant I click the mail icon, this error appears:
Internal Server Error
The server was unable to complete your request.
If this happens again, please send the technical details below to the server administrator.
More details can be found in the server log.
Remote Address: 18.104.22.168 Request ID: oobuUAXhpMN9kdGHSoWU
My hosting company looked at some settings, disabled ModSecurity and increased the PHP values; but they’re out of ideas. Does mail usually work with a softaculous install? Are there any know configuration issues?