Problems with ./setup-dev.sh

Hello everyone,

I am currently trying to set everything up and during the `./setup-dev.sh` I have received an error, after every step was successfully built and the configure files were copied, but it is looking like that at the end...

```
WARNING: The PEBBLE_VAR_CONF_PROXY_DIR variable is not set. Defaulting to a blank string.
ERROR: Named volume "letsencrypt:/etc/letsencrypt:rw" is used in service "proxy" but no declaration was found in the volumes section.
Starting...
Stop...
ERROR: Named volume "letsencrypt:/etc/letsencrypt:rw" is used in service "proxy" but no declaration was found in the volumes section.
Error: No such container: docker-compose_thingsboard-gateway_1
Overwrite the default configurations
'/home/yiny/pebble-backend/configs/conf/tb-gateway/tb_gateway.yaml' -> '/home/yiny/pebble-var/conf/tb-gateway/conf/tb_gateway.yaml'
'/home/yiny/pebble-backend/configs/conf/tb-gateway/mqtt-dev.json' -> '/home/yiny/pebble-var/conf/tb-gateway/conf/mqtt.json'
Done.
After the first startup, you need to create
a gateway in the device chapter of thingsboard,
and then use the token configuration of this
gateway to modify the
thingsboard.security.accessToken
in the configuration file
/home/yiny/pebble-var/conf/tb-gateway/conf/tb_gateway.yaml,
Compile the deployment contract and complete
/home/yiny/pebble-var/conf/api-server/apiEnv
and then restart the service.
```

Although this command terminates, the other commands like `./start-dev.sh` are causing errors since the previous step are not right.
I am using the Docker version 20.10.9 and docker-compose version 1.29.2

Does anyone know how to solve this problem?

Kind regards,
ynynloxx