SessionNotCreatedException: Message: session not created: This version of ChromeDriver only supports Chrome version 81

I solved these kinds of problems using the webdrive manager. You can automatically use the correct chromedriver by using the webdrive-manager. Install the webdrive-manager: Then use the driver in python as follows This answer is taken from https://stackoverflow.com/a/52878725/10741023

Python- Robot Framework Rebot Using List

I was able to find a simple solution by using robot.rebot_cli() instead of robot.rebot(). The answer to my example code shown above is as follows. Also, (a side note) running rebot_cli will terminate the program once it is finished merging the files together. To prevent this from happening I included exit=False :