by Jake Dallimore.
Hi Manuel,
What redirect URIs do you have set up in the Moodle tool configuration? The problem in the linked thread was down to a URI mismatch, so it's probably worth checking that. In your case, looking at that request, you'd need to have a redirect URI set to: https://lti-ri.imsglobal.org/lti/tools/3247/launches. It may also help to debug your Moodle site's mod/lti/auth.php code (adding breakpoints), so you can see exactly where the invalid request error is being thrown.
Not sure if that'll help, but it gives you a few things to check.
Cheers,
Jake
What redirect URIs do you have set up in the Moodle tool configuration? The problem in the linked thread was down to a URI mismatch, so it's probably worth checking that. In your case, looking at that request, you'd need to have a redirect URI set to: https://lti-ri.imsglobal.org/lti/tools/3247/launches. It may also help to debug your Moodle site's mod/lti/auth.php code (adding breakpoints), so you can see exactly where the invalid request error is being thrown.
Not sure if that'll help, but it gives you a few things to check.
Cheers,
Jake