CRRGW5701E The Oauth provider properties cannot be found.

We have upgraded Jazz to Version 6.0.3. Due to a lot of dependencies we must still use tomcat and DB2 as database.
2017-07-11 09:49:26,512 [ http-nio-9443-exec-33] ERROR tion.reporting.common.restservices.BaseRestService - CRRGW5701E The Oauth provider properties cannot be found. <o:p> </o:p>
com.ibm.team.integration.reporting.common.exceptions.OauthHandleException: CRRGW5701E The Oauth provider properties cannot be found.
at com.ibm.team.integration.reporting.data.restservices.DataSourceBaseService.getOauthProviderProperties(DataSourceBaseService.java:115)
at
com.ibm.team.integration.reporting.common.restservices.BaseRestService.service(BaseRestService.java:127)
Does anybody have an idea to resolve the problem.
Many thanks in advance.
Christine
<o:p> </o:p>
One answer

Hi, Christine
For the similar problem, unregister and re-register reporting builder helps in several cases.
quick reference of re-register rs application is:
https://jazz.net/forum/questions/214868/report-builder-report-keeps-loading-and-never-complete-when-added-to-a-clm-dashboard-how-do-i-fix-it
Comments

re-register of RS has not worked for me. neither has un-register; un-install; remove RS directories; reinstall; re-register...
also getting this in logs-
[Webcontainer: :1 ] ERROR org.apache.jena.riot line 40 col 81 [E202] Expecting XML start or end element(s). String data “ à” not allowed Maybe a striping error
[Webcontainer: :1 ] ERROR tion.reporting.common.restservices.BaseRestService - CRRGW5701E The OAuth Provider properties cannot be found
can't identify which file it's pointing to for the "line 40 Col 81"
any ideas?

Yes, you should consider to create your own question and not post a question as a comment to an answer about a totally different error.......
Another option is to contact support.