Cannot Start The Driver Service On Http Localhost Selenium Firefox C Info

For Java:

The error occurs only in CI/CD (Jenkins, GitLab CI) but works on your local desktop. For Java: The error occurs only in CI/CD

On Linux, install xvfb (X Virtual Framebuffer): and it kills the process.

from pyvirtualdisplay import Display display = Display(visible=0, size=(1920, 1080)) display.start() # Your Firefox driver code here Sometimes, GeckoDriver starts the HTTP server slowly (slow disk, high CPU). Selenium’s default timeout of 20 seconds expires, and it kills the process. For Java: The error occurs only in CI/CD