Chirpstack-network-server failure to start after adding adr plugin

I was trying to add another adr plugin. I updated the network server .toml configuration file after adding the line adr_plugins = ["/home/frod57/my-new-mod"]

The network server fails to start and I’ve noticed the following error in the server logs:

03-21T16:58:24.574977028+01:00" level=fatal msg=“setup adr error: plugin rpc client error: fork/exec /home/frod57/my-new-mod: permission denied”

EDIT: issue solved. Bad path to mod used.

firstly fix the directory and file permissions