wrangler
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[CDAP-15407] When a wrong directive is typed in CDAP/Wrangler no error message is displayed to user.
…ng directive or there is a syntax error in the directive typed
- [x] Merge to release/4.2
- [x] Updated JIRA with test results (CDAP-15407)
- [x] Locally tested.
@albertshau PTAL.
@albertshau PTAL.