While Updating Event rule I'm getting the below error

[Harikrishna4]

Hi Team, 

While updating event rules I'm getting the below error, can someone help me to resolve this 

Thanks,

Hari

[AJ_TechTrek]

Hi,

i hope you used the regex while creating the Event Mapping rule , please cross check there is regex issue on that mapping or event rule, its causes the Error.

Use the regex101 site for correct regex for your data.

Thanks

Ajay