Product:
Cognos Analytics 11.1.4 (Product_version=11.1 R4)
Planning Analytics 2.0.6
Microsoft Windows 2016 Server

Problem:
After a IP with Cognos Controller FAP process, the Cognos Analytics BI report give a error message. When you run a report with TM1 data.

Error Message:
The report could not run because a server error occurred.
XQE-GEN-005 Found an internal error:
java.lang.NullPointerException
RSV-SRV-0042…

Solution:
Wait and try again later.
Depending on the implementation done in TM1 after the FAP processes, it normally can take a long time before all dimensions are updated and the report can run again. This is different from each customer, as you may have different Tm1 code behind the scenes.

More Information:
http://cognospaul.com/2019/06/26/ibm-cognos-analytics-11-1-2-fix-list/