default value when lookup internal ip

internal/services/api/handler_json.go

@@ -12,8 +12,11 @@ func HandleJson(c *gin.Context) {
 	ipData, _, err := data.Ins().Query(ip)
 	if err != nil {
 		log.Err(err).Msg("Failed to query IP")
-		c.String(http.StatusInternalServerError, "")
+		c.JSON(http.StatusOK, gin.H{
+			"ip": ip,
+		})
 		return
 	}
+	ipData["ip"] = ip
 	c.JSON(http.StatusOK, ipData)
 }