To prevent symbolic links linking back to themselves and causing an infinite loop in the kernel, the kernel stops after a certain number of symbolic links have been followed with ELOOP. This doesn't necessarily mean that there is a loop, but that there are too many symbolic links encountered.
20 pages link to ELOOP:
lib/main.php:944: Notice: PageInfo: Cannot find action page
lib/main.php:839: Notice: PageInfo: Unknown action
lib/plugin/WlugLicense.php:99: Warning: Invalid argument supplied for foreach()