Hi @electric_panda. In order to gather more information that might help us to troubleshoot your problem, I'm going to ask you to post the full output from the upload when in verbose mode.
Please do this:
- Attempt an upload.
- Wait for the upload to fail.
- Hover the mouse over the red bar at the bottom of the Arduino Web Editor that shows the error message. Click and drag it up so you can see the black console window.
- Click the icon in the top right corner of the console that looks like two pieces of paper.
- In a forum reply here, click on the reply field.
- Click the
</>icon on the post composer toolbar. This will add the forum's code block markup (```) to your reply to make sure the error messages are correctly formatted.
- Press Ctrl+V. This will paste the error output from the upload into the code block.
- Move the cursor outside of the code tags before you add any additional text to your reply.
- Click the Reply button to post the output.