[FLINK-12503] Improve the exceptions [Need Proper Errors]

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Component/s: Runtime / Web Frontend
• Labels: auto-deprioritized-major
• Assignee: Unassigned
• Reporter: Chethan UK
• Created: 13/May/19 17:25
• Updated: 02/Sep/21 07:42
• Resolved: 02/Sep/21 07:42

Description

What does this mean also? 

{panel}
Root exception{panel}
{panel}
*Timestamp:* 2019-05-13, 22:49:31{panel}
{panel}
java.lang.NullPointerException{panel}

Yes, it says "java.lang.NullPointerException" but doesn't imply anything...

Please improve the Exceptions and error outputs...