How to fix a problem - I'm getting a JSON error when trying to copy a journal entry?

To add a bit more context - I have already tried the same task in both an incognito window on Chrome and in Firefox. I also tried to duplicate more than one journal entry to see if it was an issue just with that one record or all journal entries. Same error every time - I simply cannot duplicate a JE and save it. QBO throws a JSON error every time, like this - https://share.zight.com/E0uJxL21

I appreciate the steps you've taken in resolving this issue, Deb. 

I understand the importance of efficiently managing your financial records, and I'm here to assist you with this matter. 

We recommend contacting our dedicated QuickBooks Online Support team for this behavior to be investigated further. Our support representatives have specialized tools, like the ability to share your screen, to take a closer look to determine what's causing the differences in the estimates.

To get in touch with our support team, here's how:

1. Sign in to your QuickBooks Online company and select Help (?).
2. In QB Assistant, enter the topic you need help with. You can also enter questions.
3. Select Contact Us to connect with a live support agent.
4. Choose a way to connect with us either Start a chat with us, Ask the community, or Call us.

Our support team is available from Monday to Friday, 6 AM to 6 PM PT, and Saturday 6 AM to 3 PM PT for Plus, Essentials, and Simple Start. Advanced support is available anytime. 

In addition, consider visiting this article if you want to learn how to reverse a journal entry to swap the debits and credits, or delete it entirely in QBO: Reverse or delete a journal entry in QuickBooks Online

Don't hesitate to reach out to us if you have further questions about Journal Entry (JE) in QBO. The Community is always available to help. Take care.