First code cell of Firefox demo notebook gives WebDriverException

[fomightez]

Right now when running the first code cell after a launch, seeing WebDriverException: Message: Service geckodriver unexpectedly exited. Status code was: 1

Approach that seemed to work was updating/dispensing with the install you have in postBuild and moving the geckodriver install to where conda/mamba handles it, see example here, specifically the addition of geckodriver toenvironment.yml.
You won't need your postBuild after that change since that was only running GeckoDriverDownloader().

Currently the GeckoDriverDownloader() has an issue where it isn't getting filename correct (see below). This approach bypasses that.

fixes/bypasses these issues that crop up when you simply try to update:

• Old geckodriver releases raise an exception (code 64) if started with unsupported --websocket-port argument mozilla/geckodriver#1959
• "Error, unable to determine correct filename for 64bit linux"
• fixed bug to download geckodriver on linux 64bit leonidessaguisagjr/webdriverdownloader#12

[psychemedia]

Ah, thanks... I updated to use geckodriver-autoinstaller from PyPi, which seems to have fixed it...