Well, i’ve added something in the function.php but i erase those changes and it’s still the same. So i ve added it again.
I even deactivated the plugins but the error 500 is still there. To be honest i don t really know what it could be… Based on the log i think that index.php can t retrieve the file that is looking for, wp-blog-header.php, but Optimal theme does t have it..
Any idea? Thanks