TypeError: Cannot read properties of undefined (reading 'email') function () { [native code] }

[PathumH]

Im having this

 TypeError: Cannot read properties of undefined (reading 'email') function () { [native code] }

error when Im selecting the caller in the form. 
how Can I fix this error?

[Ankur Bawiskar · Accepted solution]

@PathumH 

did you check any client script is causing that issue?

are you seeing that error in browser console?