I've problem with Wordpress when trying to update

[Tonism]

Hi, I'm using panel version 11.5.30 and my os is CentOS 6.4. I've updated Wordpress and there were some error like this
"Error: Update failed: Non-zero exit status returned by script. Output stream: 'PHP Warning: fread(): Length parameter must be greater than 0 in /usr/local/psa/var/apspackages/apscatalogv6VbNz.zipcc930277-199d-9f/cache/scripts/file-util.php on line 10 PHP Warning: mysql_connect(): Access denied for user 'root'@'localhost' (using password: NO) in /usr/local/psa/var/apspackages/apscatalogv6VbNz.zipcc930277-199d-9f/cache/scripts/db-util.php on line 66 '. Error stream: 'PHP Warning: fread(): Length parameter must be greater than 0 in /usr/local/psa/var/apspackages/apscatalogv6VbNz.zipcc930277-199d-9f/cache/scripts/file-util.php on line 10 PHP Warning: mysql_connect(): Access denied for user 'root'@'localhost' (using password: NO) in /usr/local/psa/var/apspackages/apscatalogv6VbNz.zipcc930277-199d-9f/cache/scripts/db-util.php on line 66 '."

After updated, my site has broken so i've to restore the backup. Any ideas on how to fix this issue? Thank you very much.

 

[Tonism]

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