Starting on November 9th, 2020, Microsoft announced that end users are no long able to grant consent to newly registered multi-tenant apps without verified publishers.
To use the OneDrive connector, you must register an app to support OAuth authentication to Microsoft Azure.
You are required to complete the following 4 steps for a successful configuration.

Files.Read.All Sites.Read.All User.Read






config.jsonfile under
webapps/CommunityConnectors/onedrive-cc/config.json.
"oauth.authorize_uri": {
"value": "https://login.microsoftonline.com/common/oauth2/v2.0/authorize",
"editable": false
},
"oauth.token_uri": {
"value": "https://login.microsoftonline.com/common/oauth2/v2.0/token",
"editable": false
}
Please refer to KB484387: Configure Community Connectors in a cluster environment.