Why gray screen when opening a page in Chrome via SELENIUM?

Question

Google Chrome

A beginner in writing UI autotest on SELENIUM (Python)
It turned out to automate the launch of the Chrome browser, opening the page of the desired interface and logging in, however, further in the face of SELENOID UI I see only a white / gray screen, that is, after authorization the page does not open.
Manually everything is ok. What could be wrong, which way to look?