Remove trailing space in DeepLinking response errormsg claim field #141
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This PR removes a trailing space in the
https://purl.imsglobal.org/spec/lti-dl/claim/errormsgfield that's sent as part of the "Deep linking response message".We discovered an issue with the trailing space in a Blackboard context.
Blackboard does not seem to handle the field correctly as is, showing a generic error message ("The LTI tool reported an error. Please try again or contact your administrator for help") instead of the actual value of the
errormsgfield. Removing the trailing space fixed the issue for us.