LOGIN FAILED nanand - authentication failed: 0 user_id=xxxx login_type=normal credential_source=LTIAdvanced host=xxx port=xxx UA=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Safari/605.1.15Any thoughts on next steps?
We have been using an LTI link between Blackboard and Webwork (for about a week). Earlier today, all authentication through LTI stopped working. In the login log, we get
Attached is the message a student gets when they attempt to use the web link to access WW.
With debugging turned on, I get:
Nonce Expired. Your NonceLifeTime may be too short at /opt/webwork/webwork2/lib/WeBWorK/Authen/LTIAdvanced.pm line 687.
$NonceLifeTime = 60 in the LTI_authen.conf seems insufficient. Experimentation gives 120 as the roundest and lowest value which does not generate the error.
Nonce Expired. Your NonceLifeTime may be too short at /opt/webwork/webwork2/lib/WeBWorK/Authen/LTIAdvanced.pm line 687.
$NonceLifeTime = 60 in the LTI_authen.conf seems insufficient. Experimentation gives 120 as the roundest and lowest value which does not generate the error.