I was editing, but when I went to go save the project somehow s_shake went missing but its in the files of After Effects but not showing up in After Effects itself, I tried unintall it and then reinstall, I still have the same issue.
Just go the effects tab on the right click on three lines, then on the botton click on "Manage effects" and there the missing effect must be unchecked. Just check box the missing effects and restart AE it will come back.
je suis sure windows et cela ne marche pas je netrouve pas "manage effetc"