The face panel at the lower cabinet fell off
I don't know what to call this front piece that's fixed and looks like a face panel of a drawer of a lower cabinet under the sink. Since this piece is not from a drawer or anything like that, there is an opening once this wood piece fell off.
There is no way I could nail it to the cabinet, because the piece is just about 1/8" bigger all around than the opening.
My attempt to glue failed too...
Please advise me to attach this wood piece onto the cabinet again. Thanks in advance