Opening Course Errata

Post errata from the opening material in this thread. Remember, errors are things like incorrect moves or other obvious errors the authors could not have meant to put into the course (e.g., a move that gives away a queen for free). So a suggestion for a minor improvement does not belong here, but should be posted in a separate thread devoted to discussing that particular opening.

Good example of what should go in this forum:

https://icsdiscussion.forumotion.net/white-1-e4-repertoire-f6/pirc-defense-t266.htm