Doesn't work when ProcessWire is installed in a userdir folder

[markjuh]

If ProcessWire is installed in a userdir folder, the module returns a 404.

For example:
http://localhost/~mark/processwiretest/

The problem seems to be caused by the following line (line 42):

$startpage = str_ireplace(trim(wire('config')->urls->root, '/'), '', $this->sanitizer->path(dirname($_SERVER['REQUEST_URI'])));

Since wire('config')->urls->root returns a URL, it seems more appropriate to use $this->sanitizer->url() instead of $this->sanitizer->path().

Replacing line 42 with the following seems to solve the problem:

$startpage = str_ireplace(trim(wire('config')->urls->root, '/'), '', $this->sanitizer->url(dirname($_SERVER['REQUEST_URI'])));