Turn On Joomla! debug
1. select and in click on then on tab set option 'Debug System' to Yes as illustrated opposite;
2. Also in the 'System Cache' option use the pulldown and set caching OFF;
3. If it is a Language problem then also set 'Debug Language' to Yes.
The next step is to set the error reporting level so click on the tab.
1. Set Gzip Compression to No
2. Select Error Reporting to Maximum
Avoid the temptation to set the Error Reporting level to 'Development'. If you do it will show all sorts of 'syntax' errors as some parts of PHP are scheduled at some future date to change so they are marked 'deprecated' in the language definition.
Now try the front end again. This may show an error or warning message from the database or a PHP error as illustrated below.
Make a screenshot from this error page (or copy the text) and post it in the support forum to seek help.
If you do not see you any error messages (PHP or SQL),it may be that your hosting service has deactivated error reporting in your server settings.
You should contact your hosting service and request that they turn it on.
When you have posted in the forum please remember to deactivate ALL the debugging setup. Leaving debugging on will slow your site down and confuse your users!
The picture on the right is an example of an error message.
The error was created deliberately for this example by loading an incorrect version of the jDownloads Komento plugin!!
The reoprt has been truncated but note the symbol at the bottom left.
Clicking on the fields such as "Profile Information" shows some extra information that may help identify the problem.
ColinM October 2019 modified June 2023(v4)