Can't start seafile on raspberry pi os

I installed seafile 8.0.7 but can’t start it. When I execute ./seafile.sh start I get the following error message:
./seafile.sh: line 114: /home/pi/seafile/seafile-server-8.0.7/seafile/bin/seafile-controller: cannot execute binary file: Exec format error
Failed to start seafile server

./seahub.sh start does work on the other hand.
I’m using a raspberry pi 4. I don’t know if it’s useful information but I also upgraded python to version 3.8.