Not able to save Jenkins job file after having to revert to backup of plugins Jenkins version 2.285

Using Jenkins
1

Backstory:
We have an old Jenkins version that we inherited.
There was an issue when all of the plugins were updated to latest version accidently.
After reverting to a old backup of the plugins, there are many issues.

The issue that we need help with is that changes to some job files cannot be saved.

The console has the following errors when the job page is loaded;

  1. behavior.js:119 TypeError: Cannot read properties of undefined (reading ‘hasClassName’)
  2. hudson-behavior.js:49 TypeError: e.getAttribute is not a function
  3. behavior.js:119 TypeError: Cannot read properties of undefined (reading ‘next’)
  4. behavior.js:119TypeError: Cannot read properties of undefined (reading ‘hasClassName’)
  5. behavior.js:119TypeError: Cannot read properties of undefined (reading ‘makeInnerVisible’)
  6. behavior.js:119TypeError: Cannot read properties of undefined (reading ‘firstChild’)

This is related to plugins but I cannot determine what plugin is causing the issue and what version it needs to be updated to.

Screen shot reference:

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image1896×867 97.2 KB

2

I wouldn’t attempt to undo the damage by upgrading plugins. Jenkins 2.285 is no longer supported by the Jenkins update center. The Jenkins update center only provides plugin compatibility information for Jenkins releases in the past 12 months.

3

Thank you for the quick reply and advice. From the error messages, if you had to guess what plugin could be the cause?

4

I don’t have a reasonable guess. Sorry.