What is an SEO specialist afraid of?

Fears of SEO specialists. Interesting statistics from Plerdy

You can point out your fears and see what others are more likely to fear. And we are afraid, for example, when: - Forgot to open robots.txt - The site went into the red zone PageSpeed Insights - A lot of 500 errors were found in the logs - Google updated the algorithm - SEO conflicts with UX - The client changes something in the text zones and does not warn the SEO

What are your biggest SEO fears?