Error : [nQSError: 46036] Internal Assertion


Error Details
Error Codes: OPR4ONWY:U9IM8TAC:OI2DL65P
State: HY000. Code: 10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] A general error has occurred. [nQSError: 46036] Internal Assertion: Condition listNode.GetGroupBy() == NULL, file .\Src\SQOIGeneratorBuiltIn.cpp, line 1497. (HY000)

As per my understanding this error happens due to corrpution in report file on disk.

Solution:
Try to change something in report and resave the report, this should solve problem if not, try to get same report from previous release,code base or from backup using Catalog Manager bring the report to new development by Export/Import report.
In this way it worked for me.

Hope it may help you.