try fix err with nil in body

web/controller/inbound.go

@@ -13,7 +13,6 @@ import (
 	"github.com/mhsanaei/3x-ui/v2/web/session"
 
 	"github.com/gin-gonic/gin"
-	"github.com/gin-gonic/gin/binding"
 )
 
 // InboundController handles HTTP requests related to Xray inbounds management.
@@ -123,8 +122,7 @@ func (a *InboundController) addInbound(c *gin.Context) {
 	c.Request.Body = io.NopCloser(bytes.NewBuffer(bodyBytes))
 
 	inbound := &model.Inbound{}
-	err := c.ShouldBindWith(inbound, binding.Form)
-	// err := c.ShouldBind(inbound)
+	err := c.ShouldBind(inbound)
 	if err != nil {
 		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
 		return

web/service/inbound.go

@@ -2460,7 +2460,18 @@ func (s *InboundService) syncWithSlaves(method string, path string, contentType
 						continue
 					}
 					for key, value := range tmp {
-						form.Set(key, fmt.Sprintf("%v", value))
+						if value == nil { // skip nil fields
+							continue
+						}
+
+						// if the field is a slice or a map, marshal it to JSON
+						switch vv := value.(type) {
+						case map[string]interface{}, []interface{}:
+							jsonVal, _ := json.Marshal(vv)
+							form.Set(key, string(jsonVal))
+						default:
+							form.Set(key, fmt.Sprintf("%v", value))
+						}
 					}
 				default:
 					logger.Warningf("Unsupported body type: %T for form encoding on server %s", v, server.Name)