REPUBLIC OF GAMERS error while saving

This error apears everytime I wanna save my scene:
"Missing folder C:/Users/REPUBLIC OF GAMERS/Desktop/(name of a color pallete in scene)

It dosn’t affect my saved scene, everything is saved right. But why I see this error and how can I fix it?

Try creating a user on the computer that doesn’t have spaces in
the username (or accented letters or special symbols - only 0-9
and a-z)