When Opening Zoho Mail I always get a Tab with an error (See attached image)

When Opening Zoho Mail I always get a Tab with an error (See attached image)

Everytime I open Zoho mail I get this. It is trying to open a deleted email.
I already tried going to Settings > While Starting up
Changed that option back and forth but this persists. Its annoying. Other than that I love this.

Any help would be appreciated.

Here's how it looks: