You may be experiencing browser issues. Let's do the browser troubleshooting steps and try opening your report after.
To start, you'll want to sign in to QuickBooks using a private browser. This step disables its extensions and stops the cache from saving your browsing history.
Google Chrome: Ctrl + Shift + N
MS Edge and Firefox: Ctrl + Shift + P
Safari: Command + Shift + N
If there's no error, you can go back to your regular browser and clear its cache. If not, please try other browsers to see if we get the same thing.