I'm getting an error and I have no idea what it means or how to fix it.

I've been trying to setup a personal Lemmy instance for better control over federation, but I've run in to many error messages, most of I solved on my own but here's this one...

soullioness@raspberrypi:~ $ docker-compose up -d ERROR: yaml.constructor.ConstructorError: while constructing a mapping in "./docker-compose.yml", line 36, column 12 found unhashable key in "./docker-compose.yml", line 36, column 13

I can't for the life of me figure this out. I can't find any helpful info online either.

Edit: I'm using a raspberry pi 3 I'm sure there is more info I'm forgetting just let me know.