"Event ID not found" usually means Wwise has had an event name called via the game engine, but cannot find the named event in Wwise.
A few things to do when errors arise:
For the content you modified, did you modify the name of the sound event associated with the hierarchy of your new audio asset content?
Try running a Wwise integrity report, this may highlight an error associated with the content
(A bit of help can be found here: https://www.youtube.com/watch?v=cO4TOnvNk_0&t=
Have you checked the Sound Banks to see if the events are listed?
e.g. Event UI Pickup names related to content you mentioned:
Also, not sure if you have done this or not, always double check you have Generated your sound banks after any updates you may add.
The sound bank generation may complete but with errors if certain data is incorrect.
Hope the above helps diagnose the error with more details to aid progression.