改一下bug

app/Service/StatisticService.php

@@ -1175,11 +1175,15 @@ class StatisticService extends Service
 
             // 如果不是最后一条
             $key = $item['employee_id'] . '_' . $item['month'];
-            if (--$employee_count[$key] > 0) {
-                $all_salary[$key] -= $item['allocated_salary'];
-            } else {
-                $item['allocated_salary'] = $all_salary[$key];
+            if(!isset($employee_count[$key]))  $item['allocated_salary'] = 0;
+            else {
+                if (--$employee_count[$key] > 0) {
+                    $all_salary[$key] -= $item['allocated_salary'];
+                } else {
+                    $item['allocated_salary'] = $all_salary[$key];
+                }
             }
+
             return $item;
         })->all();
         $return_item_list = [];