I came across the same issue as my Joomla site from one server to another. I found out the following:
Make sure you look at the parameters in the configuration.php file. Double-check the following variables in the configuration.php file. (Double Check) You mentioned that you already did this. In this case, I'm 98% sure that you have a problem with file attributes with the configuration.php parameter. Change the Attributes to config.php from 444 to 666.
For detailed error information, open the error.php file located in / libraries / joomla / error / on your server.
In the following code:
public static function throwError(&$exception) { static $thrown = false;
change the line // echo debug_print_backtrace ();
to the next:
**print"<pre>"; echo debug_print_backtrace(); print"</pre>";**
Remember. When you change the settings in the .php configuration file, you must set for it that the config.php file parameter is set to 666. Otherwise, when you proceed to save the file, it will not change. Try it first .. Good luck.
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