Ubuntu – Error when executing headless firefox through Selenium

I am trying to execute headless firefox on the remote machine(running Ubuntu 16.04) through Selenium via SSH. However, this gives me a "Error: GDK_BACKEND does not match available displays" error. My host machine runs Windows. I do not want to see the graphical output. It is just being used for selenium testing.

I am using X Virtual Frame Buffer to act as a dummy driver:

Xvfb :10 -screen 0 1024x768x16 &

I also have exported the DISPLAY environment variable with the value of 10 for this specific case.

Where am I going wrong?

EDIT: When I simply run "sudo firefox" in my commandline over SSH after running xvbf, no errors are thrown. Errors are only thrown when running firefox through selenium.

More Details:-

I am calling firefox through selenium. The exact error that the selenium standalone server gives is:-

17:52:55.218 INFO - Executing: [new session: Capabilities     [{browserName=firefox, platform=ANY,     firefox_profile=UEsDBBQAAAAAAJuOD0nf9RXUMgAAA...}]])
17:52:55.230 INFO - Creating a new session for Capabilities   [{browserName=firefox, platform=ANY, firefox_profile=UEsDBBQAAAAAAJuOD0nf9RXUMgAAA...}]
org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host     127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
Error: GDK_BACKEND does not match available displays