Insufficient kernel memory was available for your request.
I found that ENOMEM is declared in /usr/include/sys/errno.h
but in mine linux distribution it is defined in /usr/include/asm/errno.h
56 pages link to ENOMEM:
lib/plugin/WlugLicense.php:99: Warning: Invalid argument supplied for foreach()
lib/plugin/WlugLicense.php:111: Notice: Undefined variable: ignore_authors