Not to hijack this thread, but we encountered the error message above in a Mahara/Canvas implementation, along with a similar-but-different parameter issue. Mentioning it here in case others encounter also.
After adding the Canvas-specific parameters to the module_lti_launch.php file, we found Admin could connect, but a regular user received an error as above except citing the missing parameter, "lis_course_offering_sourcedid". This parameter was missing from the module_lti_launch.php file as well. We note that lis_course_offering_sourcedid is described in Section 6 of the Basic LTI Implementation Guide, Version 1, May 17, 2010 - Final (see: https://www.imsglobal.org/specs/ltiv1p0/implementation-guide). Have added that parameter to the file as well as: 'lis_course_offering_sourcedid' => new external_value(PARAM_TEXT, 'LTI lis_course_offering_sourcedid', VALUE_OPTIONAL), which seems to have cured the problem. Looking forward to the "long term solution" alluded to above! -- You received this bug notification because you are a member of Mahara Contributors, which is subscribed to Mahara. Matching subscriptions: Subscription for all Mahara Contributors -- please ask on #mahara-dev or mahara.org forum before editing or unsubscribing it! https://bugs.launchpad.net/bugs/1697909 Title: LTI (Canvas) gives exception: WebserviceInvalidParameterException Status in Mahara: Confirmed Status in Mahara 17.04 series: Confirmed Status in Mahara 17.10 series: Confirmed Bug description: Having set up LTI in Mahara and provided Canvas with the Key/Secret and Launch URL: http://mahara-dev.stir.ac.uk/webservice/rest/server.php and custom parameter: wsfunction=module_lti_launch Clicking on the Mahara link gets: <EXCEPTION class="WebserviceInvalidParameterException"><ERRORCODE>invalidparameter</ERRORCODE><MESSAGE>Invalid parameter value detected; execution cannot continue. : Unexpected keys (custom_canvas_course_uuid,custom_canvas_user_uuid,lis_course_offering_sourcedid,) detected in parameter array.</MESSAGE></EXCEPTION> similiar comes from Blackboard To manage notifications about this bug go to: https://bugs.launchpad.net/mahara/+bug/1697909/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~mahara-contributors Post to : [email protected] Unsubscribe : https://launchpad.net/~mahara-contributors More help : https://help.launchpad.net/ListHelp
