openwpm.errors.BrowserConfigError: The extension did not boot up in time

[sober1998]

Hi, I'm run demo.py, and I got the following error.

ubuntu@VM-0-9-ubuntu:~/OpenWPM$ python demo.py
browser_manager      - INFO     - BROWSER 255079965: Launching browser...
browser_manager      - ERROR    - BROWSER 255079965: Failed to complete extension startup in time
browser_manager      - ERROR    - BROWSER 255079965: BrowserConfigError thrown, informing parent and raising
storage_controller   - INFO     - Terminating handler, because the underlying socket closed
storage_controller   - INFO     - Received shutdown signal!
Traceback (most recent call last):
  File "/home/ubuntu/OpenWPM/demo.py", line 54, in <module>
    with TaskManager(
  File "/home/ubuntu/OpenWPM/openwpm/task_manager.py", line 123, in __init__
    self._launch_browsers()
  File "/home/ubuntu/OpenWPM/openwpm/task_manager.py", line 184, in _launch_browsers
    success = browser.launch_browser_manager()
  File "/home/ubuntu/OpenWPM/openwpm/browser_manager.py", line 185, in launch_browser_manager
    ready = check_queue(launch_status)
  File "/home/ubuntu/OpenWPM/openwpm/browser_manager.py", line 148, in check_queue
    raise exc.with_traceback(tb)
  File "/home/ubuntu/OpenWPM/openwpm/browser_manager.py", line 726, in run
    extension_socket = self._start_extension(browser_profile_path)
  File "/home/ubuntu/OpenWPM/openwpm/browser_manager.py", line 706, in _start_extension
    raise BrowserConfigError("The extension did not boot up in time")
openwpm.errors.BrowserConfigError: The extension did not boot up in time

Actually, this error happens occasionally, my machine is a tencent cloud server with 8-core 16GB, and OS is Ubuntu 18.04. I only modified a little in demo.py, config.py and fingerprint.json. Would you mind taking a look at this issue? Thank you in advance.