[Bug] [zeta] Fix null pointer exception when submitting jobs

[liugddx]

Purpose of this pull request

Fix #4915

Does this PR introduce any user-facing change?

How was this patch tested?

Check list

• If any new Jar binary package adding in your PR, please add License Notice according
  New License Guide
• If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• If you are contributing the connector code, please check that the following files are updated:
  1. Update change log that in connector document. For more details you can refer to connector-v2
  2. Update plugin-mapping.properties and add new connector information in it
  3. Update the pom file of seatunnel-dist
• Update the release-note.

[Hisoka-X]

#4915 (comment)
cc @W-dragan

[Hisoka-X]

@W-dragan Is it works now?

[liugddx]

@W-draganW Thanks for your test.

[Hisoka-X]

Please fix ci.

[W-dragan]

@W-dragan Is it works now?

At present, there are no issues with the simple self-test. Performance testing will continue in the future, and there will be real production usage scenarios. If there are any problems, we will continue to follow up and communicate with you

[liugddx]

Please fix ci.

Done.