How to print the error message of an exception of errorUserTitle

I am catching an exception on my system. The exception is thrown when I try to create a facebook ad with value less than 1.32.

I need to print the exception error message to the user. I can not print.

If I use dd ($ e) it prints this:

But I return $e or use json_decode ($e, true) it returns empty.

Does anyone know how I can print the error message of errorUserTitle?

via Chebli Mohamed