Upgrade to v8 succeded but okta(saml)integration not working anymore

we did upgrade our ECS based redash to V8 from V7 and it went fine but accessing the redash app from SAML(okta) is failing after the upgrade with below errors.

upgrade to v6 and v7 did not cause these issues.

[2020-08-21 01:01:32,637] ERROR in app: Exception on /saml/callback [POST]
File “/app/redash/authentication/saml_auth.py”, line 69, in idp_initiated
File “/app/redash/authentication/saml_auth.py”, line 56, in get_saml_client


[2020-08-21 01:01:32,639][PID:35][INFO][metrics] method=POST path=/saml/callback endpoint=saml_auth_idp_initiated status=500 content_type=? content_length=-1 duration=280.49 query_count=1 query_duration=3.10

we are using okta app and all the details for saml exists in the table public.organizations and works with V7.

is there any change with V8 about the saml configuration?

enabled RedashLogLevel=DEBUG and noticed errors for snowflake before the saml errors ,so disabled this datasource and redeployed redash

RedashDisabledQueryRunners=redash.query_runner.big_query,redash.query_runner.snowflake

this helped to fix the saml error