Forbidden Url on accessing "domain?/python+anything"

Hi, I am new to Cpanel and experiencing a weird error. noticeboard.domain.com/course.php?Hyderabad/python+and+Django+frame+work+course/&pid=217 This Url gives me 403 error while noticeboard.domain.com/course.php?Hyderabad/ython+and+Django+frame+work+course/&pid=217 doesn't I tried multiple ways and Find out that word "/python+anything" gives me an error. some cases noticeboard.domain.com/course.php?/python+anything/&pid=217 -error noticeboard.domain.com/course.php?/python/&pid=217 - works noticeboard.domain.com/course.php?/java/&pid=217-works This happens only in one case that is "/python+anything" this happens to multiple websites in the same Cpanel. Why?