vpn start script starting during boot

hello,

i tried to make thats my libreelec aktivates vpn on boot. when i start it manuall it works (until one error) but when i boot he makes nothing.....
i use libreelec on my normal pc hadrdware, the generetic build.

i made a autostart.sh with this code :

(
openvpn /storage/.kodi/userdata/addon_data/service.vpn.manager/UserDefined/boot.ovpn ;
sleep 10; \
) &

the problem is by this code i get a error when i start it manuall , but it starts.

: not foundonfig/autostart.sh: line 4:

any ideas whats wrong with my code? and why he doesnt start it by booting ?

thx

first thank you for your reply !!

second i doesnt have the file unter this folder, i ohne had "openvpn.service.sample", do you mean this ?

and i dont had this file openvpn.config in the folder...

1) Edit /storage/.config/openvpn.config to the .config/.conf/.ovpn file
# from your VPN service provider and test it works first by connecting at
# the console:
#