Blunder file: French defence overwhelmed

Think I was just up against a much tactically stronger player here - who was underrated due to not playing many standard games - but interesting because it was quite hard for me to work out the blunder, after quite a lot of book moves.  I think 14...h6 was the blunder having passed it through Stockfish - evaluation seems to go down hill rapidly not far off the mainline- but interested to hear any thoughts as I kind of play into a similar position quite often.