whats mean this error?

[gonny]

VZAgent returns the error #2050: "Operation stat() with path "/etc/mailman" failed : [errno=12] Cannot allocate memory "

And how can be fixed.
And this one:

VZAgent returns the error #2050: "file: error while loading shared libraries: libz.so.1: failed to map segment from shared object: Cannot allocate memory Operation stat() with path "/etc/mailman" failed : [errno=12] Cannot allocate memory "

 

[IgorG]

It is Virtuozzo related errors but not Plesk. Make sure that your VPS has enough resources.