iCal Import Stripping out Slashes from URL

when importing an ical I am seeing an error that says the url cannot be resolved. See the error below:

Not a valid VCALENDAR data file: webcaltrinityschooloftexas.myschoolapp.compodiumfeediCal.aspxzUuJitw2ffhtg2ikl2bDLIw2fe2bkQAcSHVyXVDDj7BMk1L3DTQ3QW4vzSAoLceYDLlmRjcM5Tz4NP9DOpU7FpO6Mbw3d3d

I see it here and in the server log file. It looks like something is stripping out the slashes. Here is the original link--> webcal://trinityschooloftexas.myschoolapp.com/podium/feed/iCal.aspx?z=vdCvD5ZmkrygT7KKqRSD8xCezDsBfGJ%2fETexp1LbfsjE470ZT5owe3P%2fKudbvGCoGNBy7Mv1oowfU0LmUPNGDQ%3d%3d

Any help would be greatly appreciated!