I'm guessing it's a pathing issue. It can't "stat" (that is, get the statistics, including file size; stat is actually a command, but that's what it stands for, and lots of stuff calls stat to get basic file statistics) for the file in question, which looks to be "/src/bin/myfile.zip." That path looks bad to me -- the leading slash means it's going to be going from system root. You probably want "./src/bin/myfile.zip" or, more simply, "src/bin/myfile.zip" which would be a relative path from the working directory of /home/a2882504/public_html. If /src exists, you almost certainly do not have permission to read from it. If you're looking for something in your home directory's src/bin, you'll need to use the full path ("/home/a2882504/src/bin/myfile.zip") or the appropriate relative "directory walk": "../src/bin/myfile.zip".
Yup; avwolf is right there. Alternately, if the path is correct(and you need to do stuff in that folder), you'll need to figure out what the permissions are on that folder -- what group has access -- and make the PHP/apache user part of that group, and therefor give it access.