The popular tradition has it - that R Shimon Bar Yohai passed away on Lag Ba'Omer.
Yom Shmeit Rashby
A great Torah Scholar claimed this is a defective girsa and that a Heith is missing
And it should actually read: "Yom SIMCHAT Rashb"y"
Who is this "radical textual critic" LOL?
Why it is Rav Yoseh Chaim, author of the Ben Ish Chai - in his Da'at uT'vunah! You never know who will fix a problematic girsa with hagahah!