NPM looks for certs in wrong folder

[Marco3G]

Hi everyone

I am new to both docker and NPM. I set it up today and everything was working well, reverse proxy worked.
After I copied the /etc/letsencrypt files into my NPM installation (/etc/letsencrypt is mapped to /srv/nginxproxymanager/letsencrypt ), everything seemed to be working great.

Then I rebooted the docker machine. Now I'm getting these messages:
nginx: [emerg] cannot load certificate "/etc/letsencrypt/live/npm-5/fullchain.pem": BIO_new_file() failed (SSL: error:02001002:system library:fopen:No such file or directory:fopen('/etc/letsencrypt/live/npm-5/fullchain.pem','r') error:2006D080:BIO routines:BIO_new_file:no such file)

Can anyone tell me what I did wrong?