I’m not able to load any plugins in Jenkins application and getting " Failed Loading plugin SAML Plugin v2.1.1-275.va_5718591a_999 (saml)" similar error for all plugins after installing new plugins which are not compatible.
If I try to restore the backup directory of plugins, will it help to resolve my issue?
If you remove the incompatible plugins and restore the backup of the plugins directory it should help resolve the issue. If you restore the backup without removing the incompatible plugins, it probably won’t solve your issue.