Hi Katrina,

Thank you for posting in the Community!

I've found a similar product investigation with the error you've received when accessing Management reports in QuickBooks Online. For us to better help you and escalate the error encountered, I recommend contacting our Customer Care Team. That way, one of our care agents can take a look in your account/report in a secure form.

To contact support:

1. Click on Help (?) icon.
2. Click on Assistant and fill out information asked.
3. Click on Contact Us.
4. Enter a short summary of your concern.
5. Click on Continue.
6. Choose Start a chat or Call Us.

• Start a chat with a support expert. Live chat M-F, 8:30 AM to 6:30 PM and S-S, 8:00 AM to 8:00 PM, AET.
• Call us. M-F, 8:30 AM to 6:30 PM, AET.

You can also check this link to learn more about: View and edit management reports in QuickBooks Online.

Post again in the Community if you have other questions about reports.