修复日志问题

internal/logger/logger.go

@@ -118,7 +118,8 @@ func InitFileLog(logPath string) error {
 		logPath = defaultDir
 	}
 
-	if fi, err := os.Stat(logPath); err == nil && fi.IsDir() {
+	fi, err := os.Stat(logPath)
+	if err != nil || fi.IsDir() {
 		logPath = filepath.Join(logPath, "monitor.log")
 	}