fix: load config error

Signed-off-by: Junjie Gao <[email protected]>

pkg/configutil/once.go

@@ -25,14 +25,14 @@ var (
 	// configInfo is the config.json data
 	configInfo *config.Config
 	configOnce sync.Once
+	err        error
 )
 
 // LoadConfigOnce returns the previously read config file.
 // If previous config file does not exist, it reads the config from file
 // or return a default config if not found.
 // The returned config is only suitable for read only scenarios for short-lived processes.
 func LoadConfigOnce() (*config.Config, error) {
-	var err error
 	configOnce.Do(func() {
 		configInfo, err = config.LoadConfig()
 		if err != nil {