Does anyone know how to fix this message?

[Anonymous]

Validation Error approving ES 2016-10-PPM-Sandbox-Hands.ES 2016-11-PPM-Sandbox Hands 2 — Email Message has script tags

[Chris_Johnston]

In e-mails, you can't have javascript. Look for "<script> all javascript </script>" and remove that portion from your email.

[Charlotte_Lfg]

Hi, I have the same issue and even though I remove it everywhere, the next time I'm editing the mail, those script tags are back and I have to remove them all over again through the entire mail. It's very time-consuming, do you know how to fix this? 

Many thanks,

Charlotte