Duct tape?
Nope. This is on the inside of the drawer. There is a slot in each end of the drawer for the metal rod to rest in. The wood is old and warped and there is no way to put it back into “new” condition
I thought of duct tape when I moved into this apartment, but it didn’t work. I tried two or three kinds of tape, IIRC, and gave it up as a bad job.
I bought two of these file cabinets in 1995, and they have outlived their usefulness.