Creating Generic Application Link without Incoming Authentication description will cause user profile OAuth Access Token page to return error

Summary

Attempting to load the OAuth Access Token page from User Profile will return NullPointerException for Generic Application Link

Steps to Replicate

1. Create an OAuth Generic Application Link in Bitbucket
2. Configure Incoming Authentication OAuth setting without description
3. Create a user access token with the generic application
4. Access the user OAuth Access Token page, e.g.: https://<INSTANCE_NAME>.atlassian.net/builds/plugins/servlet/oauth/users/access-tokens.

Expected Results

User access token is listed.

Current Result

The page returns error 500.
The following error shown in atlassian-bitbucket.log

2016-08-20 00:25:26,553 ERROR [http-nio-7990-exec-10] ragesh @1L3C0IXx25x73x0 2rgn8b 0:0:0:0:0:0:0:1 "GET /rest/applinks/2.0/applicationlinkForm/manifest.json HTTP/1.1" c.a.a.c.r.u.CreateApplicationLinkUIResource ManifestNotFoundException thrown while retrieving manifest
com.atlassian.applinks.spi.manifest.ManifestNotFoundException: null

2016-08-20 01:13:50,832 ERROR [http-nio-7990-exec-4] @1L3C0IXx73x257x0 t18j1e 0:0:0:0:0:0:0:1 "GET /mvc/error500 HTTP/1.1" c.a.s.i.web.ErrorPageController There was an unhandled exception loading [/plugins/servlet/oauth/users/access-tokens]
java.lang.NullPointerException: null

Workaround

Delete the current OAuth Incoming Authentication configuration and recreate it again with description.