I get the error message when trying to upload from bank: Cannot read properties of null (reading 'getMonth')?

Thanks for sharing your concern with us, Lion Laura M. 

Let me share some basic troubleshooting to help resolve this. I want to make sure you can get past this error.

If you haven't tried some troubleshooting steps, let's do that to rule out any browser-related issues. It helps fix your browser to work better and faster.

Most common issues in QuickBooks Online are usually the result of outdated or corrupt cache files in your web browser. Let's try accessing your account through an incognito window to rule out the possibility of a webpage issue. You can refer to these shortcut keys to open an incognito window in all supported browsers:

• Chrome: Ctrl+Shift+N
• Firefox: Ctrl+Shift+P
• Safari: Command+Shift+N

If you're not getting the same message, I recommend clearing the cache of your regular browser so you can access QuickBooks with a clean slate. You may also use a different supported one.

Visit me here again in the Community and let me know the result after performing the steps above. I'm determined to help you succeed.