Thread:Project:Support desk/PHP Warning:require(/Applications/MAMP/htdocs... No such file or directory..

Could someone help?

I have two errors coming up:

PHP Warning:require(/Applications/MAMP/htdocs/mediawiki-1.21.2/includes/WebStart.php) failed to open stream: No such file or directory in /Applications/MAMP/htdocs/mediawiki-1.21.2/index.php on line 55

What does this mean and how can I fix it?

Also...

PHP Fatal error: allowed memory size of 52428800 bytes exhausted (tried to allocate 9920 bytes) in /Applications/MAMP/htdocs/mediawiki-1.31.3/includes/media/Bitmao.php on line 552

I've looked at both of these files in the lines stated and can't see anything wrong....

I am getting one blank page on my wiki under specialpages:list files... this is the only thing I am experiencing a problem with.

HELP