java.lang.NullPointerException in Jenkins pipeline

Hi Everyone.

I 'm facing java.lang.NullPointerException in Jenkins pipeline at the start of the pipeline, this issue occurs suddenly in our jenkins and once this issue started all pipeline sin Jenkins will start same error and no pipeline will not run. Once we restart the Jenkins pipelines will work without any issue for two three days and again same error will come.

Can some one please help me?

Regards,
Venkateswar