Please share the version details for your enviorment (dhis2 instance, PostgreSQL, PostGIS, Java, OS…etc) and please share the full Catalina.out log (without the sensitive info)
From the log, I see lots of ‘memory leak’ … please did you try to clear server cache (Data Administration app → Maintenance → Clear analytics tables, Clear application cache, & Reload apps). If possible maybe restart the instance after clearing the cache, too!