This error is likely caused by a previously running Xvfb process, preventing a new instance from launching.
1. Check for Running Xvfb Processes
Run the following command to check if Xvfb is still running:
ps aux | grep vfb
If a related process is found, terminate it and try again.
2. Debug the Issue with Logging
If the cause is still unclear, use the -e option to log the error output:
xvfb-run -e PATH_TO_LOG_FILE ./magicpod-command-line
Replace PATH_TO_LOG_FILE with a file path where you have write permissions.