LTI 1.1 Transition signature mis-match

[Zohaib Akram]

Hi Dr Chuck,

I have created a assignment on canvas in a course which was already linked with LTI 1.1 key.I setup LTI 1.3 developer key in canvas admin account. When i have created LTI 1.3 deployment key in that course it automatically launch with LTI 1.3 key and had additionally parameters
lti11_transition_user_id:
"xxxxxxxxx"
lti11_transition_oauth_consumer_key:
"demo_1"
lti11_transition_oauth_consumer_key_sign:
"bCfqIbQmjxxxxxxxxxxxxxxxxx="

I also setup the deployment key and issue on tool provider side in the same key record which was using for LTI 1.1 launch. i updated the deployment key,issuerid in that table.

But when verify the signature (lti11_transition_oauth_consumer_key_sign) in tsugi but it is giving an error LTI 1.1 Transition signature mis-match. I have also attached the screenshot with this. What could be the problem. ?
Thanks
Zohaib