@fierevere
I looked for debug.log file in wp-content folder and in that file the latest errors was for about one week ago!
But I also looked at developer tools console and found this error whenever I click on update button:
responseText: “<br />↵<b>Notice</b>: Unknown: file created in the system’s temporary directory in <b>Unknown</b> on line <b>0</b><br />↵<br />↵<b>Warning</b>: Cannot modify header information – headers already sent in <b>Unknown</b> on line <b>0</b><br />↵0”
