Whenever a cache piled on your browser, it can cause issues such as the error you're getting when trying to classify trips in QuickBooks Self-Employed.
As an initial step, let's try using a private browser or incognito window when accessing your account. Your browser's cache might be causing that message. A typical browser uses a cache of memory to work efficiently and load pages faster, but as data collects it can cause unexpected results.
You can refer to the following keyboard shortcuts:
Google Chrome: press Ctrl + Shift + N
Mozilla Firefox: press Ctrl + Shift + P
Safari: press Command + Shift + N
If you're able to save the classified trips successfully using the private window, you can switch back to the regular browser then I recommend clearing your browser's cache. Otherwise, you can use other supported browsers. Cache differs from every browsers and computers.
If you get the same error, I recommend calling our Phone Support. They can initiate a screen sharing session to help you get to a resolution quickly.
Here's how you can reach them:
From the Assistant tab, type or say Talk to a human.
If you want to connect with us directly, type or say Talk to a human.
Then select your preferred support method: Message an agent (Live chat), Call an agent, or Get a callback.