Trailing slash unexpectedly required within Arches connection tab

[chrisdolby-HE]

Hi folks,

One I've decided to log myself.

When entering details within the add-in's Arches connection tab, a trailing slash is required but not specifically mentioned within the URL for a successful connection (admittedly within example).

Expected: URL can be used with or without trailing slash (https://esriarches.fargeo.com and https://esriarches.fargeo.com/)
Actual: URL must have trailing slash, without a slash I receive a login error.