Not able to SSO login on private cloud with 404 error

[han-zhang]

Hi

We have apigee-sso module installed and we enabled SSO login with Okta for edgeui.

During the saml authentication process, we got below error message in browser:

Uh oh.
Something went amiss.

This is the apigee-sso.log for this session:

10.11.99.165 - - [18/Aug/2020:14:39:02 -0400] "GET /oauth/authorize?client_id=edgeui&response_type=code&redirect_uri=http%3A%2F%2Fqa-apigee-lx01.com%3A9000%2FoAuthCallbackWithAuthcode&state=%2F HTTP/1.1" 302 - 6 text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 -
10.11.99.165 - - [18/Aug/2020:14:39:02 -0400] "GET /login HTTP/1.1" 200 19934 20 text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 text/html;charset=ISO-8859-1
10.11.99.165 - - [18/Aug/2020:14:39:04 -0400] "GET /saml/discovery?returnIDParam=idp&entityID=apigee-saml-login-opdk&idp=okta&isPassive=true HTTP/1.1" 302 - 8 text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 -
10.11.99.165 - - [18/Aug/2020:14:39:04 -0400] "GET /saml/login/alias/apigee-saml-login-opdk?disco=true&idp=http%3A%2F%2Fwww.okta.com%2Fexk82l9kmxKkA2Sgk2p7 HTTP/1.1" 200 1862 12 text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 text/html;charset=UTF-8
10.11.99.165 - - [18/Aug/2020:14:39:07 -0400] "POST /saml/SSO/alias/apigee-saml-login-opdk HTTP/1.1" 404 18207 235 text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 text/html;charset=ISO-8859-1
10.11.99.165 - - [18/Aug/2020:14:39:08 -0400] "GET /vendor/font-awesome/css/font-awesome.min.css HTTP/1.1" 404 18207 9 text/css,*/*;q=0.1 text/html;charset=ISO-8859-1
10.11.99.165 - - [18/Aug/2020:14:39:08 -0400] "GET /resources/oss/stylesheets/application.css HTTP/1.1" 404 18207 10 text/css,*/*;q=0.1 text/html;charset=ISO-8859-1
10.11.99.165 - - [18/Aug/2020:14:39:08 -0400] "GET /resources/images/sad_cloud.png HTTP/1.1" 404 18207 8 image/webp,image/apng,image/*,*/*;q=0.8 text/html;charset=ISO-8859-1

looks like we got 404 error for a post call of /saml/SSO/alias/apigee-saml-login-opdk that caused the issue.

Any clue?

Thanks