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app/Models/Rebate.php

@@ -23,7 +23,8 @@ class Rebate extends BaseModel
         $data['date'] = Carbon::now('America/New_York')->format('Y-m-d');
         $rebate = static::where('date', $data['date'])
             ->where('member_id', $data['member_id'])->first();
-        $profit = bcadd($rebate->profit, $data['amount'], 2);
+
+        $profit = bcadd($rebate->profit, $data['profit'], 2);
         $rebate->profit = $profit;
         $rebate->save();
         return $rebate;