Error code: x21

Description: Not enough memory to complete the required operation (for example, an attempt to open a large file).

For details on the place and the reason of the error, refer to the program log (by default, it is located in the /var/log/syslog file or the /var/log/messages file, depending on OS).

Resolving the error:

1.Increase size of available memory for program processes (for example, by changing the limits with the ulimit command), restart the program and repeat the operation.