don't crash when config is empty

Signed-off-by: Hadi <112569860+anotherhadi@users.noreply.github.com>

back/config/config.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"fmt"
+	"io"
 	"log"
 	"os"
 
@@ -86,6 +87,10 @@ func Load(path string) (*Config, error) {
 	dec := yaml.NewDecoder(f)
 	dec.KnownFields(true)
 	if err := dec.Decode(&cfg); err != nil {
+		if err == io.EOF {
+			log.Printf("config: %q is empty, starting with empty config", path)
+			return Default(), nil
+		}
 		return nil, fmt.Errorf("config: decode: %w", err)
 	}
 	return &cfg, nil