修复Runtime error

lib/respond.go

@@ -285,6 +285,7 @@ func (c *Core) RespondDaily(user *model.User, model string) {
 
 			return
 		}
+		if category != nil {
 			_ = category.WaitForElementState(`visible`)
 			time.Sleep(1 * time.Second)
 
@@ -425,6 +426,7 @@ func (c *Core) RespondDaily(user *model.User, model string) {
 					return
 				}
 			}
+		}
 		score, _ = GetUserScore(user.ToCookies())
 	}
 }