I'm glad to have you here in the Community. Rest assured, I'm here to assist you and help you with the problem you're experiencing.
To begin with, may I ask if you've received a specific error and what data you're trying to export? This way, we can provide you with the appropriate and necessary solution you need. Any additional information will be highly appreciated.
In the meantime, let's perform a basic troubleshooting to see if this is a browser-related issue.
These are the keyboard shortcuts:
Mozilla Firefox: CTRL + Shift + P
Microsoft Edge: CTRL + Shift + N
Google Chrome: CTRL + Shift + N
Safari: Command + Shift + N
If it works, we can clear the browser's cache so the system can start fresh. If you get the same result, I recommend switching to a different supported browser.