I have come across a few people with the same issue that seemed to have solved the problem with System.addProperty(\"webdriver.chrome.driver\", \".../chromedriver.exe\");<
I've installed the nuget package in my c# console application and after build there was no 'chromedriver.exe' in bin/Debug folder. So I manually downloaded the chromedriver for my version of chrome and copied it to the directory manually and then it worked.