NullPointerException with POST /api/identity-provider/start

[pleymor]

We are unable to start a SAML v2 Login Request (as explained here).

Our version of FusionAuth is 1.20.0.

The exception bellow is throw:

2020-11-02T09:12:47.670831893Z 2020-11-02 9:12:47.670 AM ERROR io.fusionauth.app.primeframework.error.ExceptionExceptionHandler - An unhandled exception was thrown
2020-11-02T09:12:47.670862293Z java.lang.NullPointerException: null
2020-11-02T09:12:47.670866593Z 	at io.fusionauth.api.service.authentication.SAMLv2IdentityProviderAuthenticationService.start(SAMLv2IdentityProviderAuthenticationService.java:176)
2020-11-02T09:12:47.670870593Z 	at io.fusionauth.app.action.api.identityProvider.StartAction.post(StartAction.java:61)

Note: The configuration of our Application and Identity provider in FusionAuth looks good as we are able to sign in graphically (with the SSO button).

Thank you!

[robotdan]

@adrien-laugueux said in NullPointerException with POST /api/identity-provider/start:

2020-11-02T09:12:47.670831893Z 2020-11-02 9:12:47.670 AM ERROR io.fusionauth.app.primeframework.error.ExceptionExceptionHandler - An unhandled exception was thrown
2020-11-02T09:12:47.670862293Z java.lang.NullPointerException: null
2020-11-02T09:12:47.670866593Z at io.fusionauth.api.service.authentication.SAMLv2IdentityProviderAuthenticationService.start(SAMLv2IdentityProviderAuthenticationService.java:176)
2020-11-02T09:12:47.670870593Z at io.fusionauth.app.action.api.identityProvider.StartAction.post(StartAction.java:61)

Thanks for reporting. This looks to be a bug, moving to GitHub.
https://github.com/FusionAuth/fusionauth-issues/issues/963

As a work around, pass in a dummy data object to the API, for example:

{
  "applicationId": "1c212e59-0d0e-6b1a-ad48-f4f92793be32",
  "identityProviderId": "778985b7-6fd8-414d-acf2-94f18fb7c7e0",
   "data": {
      "workaround": true
   }
}