How do i solve this errer?

When i update my pydio server to Pydio-core-upgrade-8.0.1-8.0.2. Zip,it is failed tu update,it appers - Error : Could not send response!.so,how do solove it ,thanks every body

could you put your pydio in debug mode doing the following :


Go to conf/bootstrap_context.php .
Switch this line to true : 
define("AJXP_SERVER_DEBUG" , true);

and show me the entire stack of this error, can you also tell me the configuration that you chose on the upgrade panel ( a screen capture would be awesome ).