Connect with and learn from others in the QuickBooks Community.
I'll help you get past the error, accounting-aquat.
The error 378 means that QuickBooks Online (QBO) is unable to access your bank due to the issue in login information. This also happens when a user has been removed access from your FI website.
We can fix this by re-establishing the connection between QBO and the bank.
I'll show you how:
I've also included here a link that contains some steps about fixing online banking errors for your reference: What to do if you see a bank error or bank transactions won’t download?
Please know I’m only a post away if you need anything else. I’ll be here to help. Have a great day!