We tried to use this plugin, and after the configuration, we could login to gitlab and the gitlab shows this error:

"An error has occurred

The requested scope is invalid, unknown, or malformed."

We use this versions:

Gitlab: Comunity Edition 9.1.2

Jenkins: 2.46.2

Gitlab auth plugin: 1.0.9

We tried with http and https.

Our configuration:

<authorizationStrategy class="org.jenkinsci.plugins.GitLabAuthorizationStrategy" plugin="gitlab-oauth@1.0.9">
<rootACL>
<organizationNameList class="linked-list">
<string></string>
</organizationNameList>
<adminUserNameList class="linked-list">
<string>xxxxxxxxxxx</string>
</adminUserNameList>
<authenticatedUserReadPermission>true</authenticatedUserReadPermission>
<useRepositoryPermissions>false</useRepositoryPermissions>
<authenticatedUserCreateJobPermission>true</authenticatedUserCreateJobPermission>
<allowGitlabWebHookPermission>false</allowGitlabWebHookPermission>
<allowCcTrayPermission>false</allowCcTrayPermission>
<allowAnonymousReadPermission>false</allowAnonymousReadPermission>
<allowAnonymousJobStatusPermission>false</allowAnonymousJobStatusPermission>
</rootACL>
</authorizationStrategy>
<securityRealm class="org.jenkinsci.plugins.GitLabSecurityRealm">
<gitlabWebUri>http://xx.xx.xx.xx</gitlabWebUri>
<gitlabApiUri>http://xx.xx.xx.xx</gitlabApiUri>
<clientID>xxxxxxxxxxxxxxxxxxxxx</clientID>
<clientSecret>xxxxxxxxxxxxxxxxx</clientSecret>
</securityRealm>

and in gitlab app, we used "read_user" scope.

Any idea or posible wrong configuration?

Thanks for all.