MUX displays blank pages after upgrade

Products

• Clarity PPM On Premise
• Clarity PPM SaaS

Issue/Introduction

After upgrading Clarity MUX pages are showing blanks and no data is being loaded.

On the log files we can see errors like:

ERROR 2025-05-28 09:14:16,783 [http-nio-8080-exec-47] ppm.rest (clarity:myuser:mysession:PPM_REST_API) (b787df19-c7c6-4796-84bc-aabe4edd54c7) RestAPILookupServiceImpl :: Problem occurred while reading lookup filter attributes for lookupType: BROWSE_TASK_OWNER_ALL
com.niku.union.persistence.nsql.NSQLSyntaxException: NSQL Syntax exception: NSQL_SYNTAX_UNKNOWN_SEC_OBJECT, Info: RESOURCE
    at com.niku.union.persistence.nsql.handlers.SecurityHandler.handleMatch(SecurityHandler.java:65)
    at com.niku.union.persistence.nsql.Utils.parse(Utils.java:142)
    at com.niku.union.persistence.nsql.NSQLStatementSet.parseNSQL(NSQLStatementSet.java:723)
    at com.niku.union.persistence.nsql.NSQLStatementSet.<init>(NSQLStatementSet.java:229)
    at com.niku.union.persistence.nsql.NSQLStatementSet.<init>(NSQLStatementSet.java:133)
    at com.niku.union.persistence.nsql.NSQLQuery.initialize(NSQLQuery.java:263) 

When looking at the referenced lookup in the log files, it throws a system error.

The associated attribute looks corrupted too. Did anything go wrong at upgrade time?

Environment

Clarity 16.3.2

Resolution

Clear the Clarity cache

Flush Clarity server cache