Robots error according to Yandex version, how to solve?

Question

Search Engine Optimization

An error in the webmaster, Yandex puts a space and a red dot when checking, deleting it in this window, writes that there are no errors. I download the correct version without dot and space, but the error doesn't go away.
On the screen, the red arrow is mine, the red dot is not mine, but Yandex.

Answer 1

Download robots from the server --> open in a text editor or Word --> enable the "show all characters" option (in Word Ctrl+Shift+8) --> delete all unnecessary characters --> upload back.