Can't delete a file (error code -50) and the external drive won't eject because of it.

Running Mojave on my MacBook. An empty file was on my Passport external drive, and I moved it to the trash. I can't empty the trash or move the file. Force empty trash (Option key) doesn't work. I tried to move the file to the desktop and it just copied, leaving the troublesome file in the trash. Nothing will transfer to the Passport drive now and I also can't eject it.