Have tried running Mileage on a private window, info236?
If not, let's try doing so to check if this has something to do with your browser. The web browser keeps files in its cache and saves the pages you have previously visited. Sometimes the stored files can affect communication between the browser and QuickBooks Online.
If you no longer have the error privately, I'd recommend clearing your temporary internet files. Using a different support browser can also fix the issue. Below are the ones supported by QuickBooks Online:
Let me know in the comments below if you need additional assistance. I'll be around to help.
After saying Mileage works in private incognito, its now stopped and the Error message is back. It seems to be either that it works for a couple of reconciles and then stops or maybe its after I have deleted a journey. Any ideas?? I'm able to use the App so will continue with that for now.
We have received several open cases from other users, like you, who received an error message upon editing and saving a trip for mileage.
I'd recommend contacting our Customer Care Support so someone can pull up your account, securely, and investigate the root cause of this matter. He/she will also create a case ID that is associated with your account and will be submitted to our engineers for further research.
To do so:
If there's anything else that I can help you with, please let me know in the comment section down below. I'm always around happy to help.