Hi
Weird, some mailers can be broken on J3.5.1 but 3.4.5 should be now problem.
Can you test disabling all VMVendor plugins ?
Do you knwo if this issue is from A VM payment method or from VMVendor ?
Let me know
- Need help? Post the URL of the related page (eventualy as confidential info), it will help solve your issue faster.
- An error, notice or warning? report the exact message including the line number
- If you get a white page , enable error reporting and / or check your server error logs.