On the TrustFile dashboard there is no tax due listed for a state.
If you see a state that looks like the following on your TrustFile dashboard it means that you did not have any taxable sales during the filing period or that credits you may have had for refunds negated the sales.
The button no longer says "File Now" and instead says "Prepare". When you click the Prepare button it will bring you to the Review & File page where you will be able to file the $0 return by clicking the File a $0 return button.
Even if you do not have tax due you are still expected to file the $0 return with the state to remain compliant.