Apache error log with mmap cache errors?

I found many errors like this one [Wed Nov 06 14:34:01 2013] [warn-phpd] mmap cache can't open C:\www\somefile.php ...

Error when running mmap related function in python 2.6?

I tried to run the following code from http://docs.python.org/library/mmap.html import mmap # write a simple exam...