DB::beginTransaction(); After it is turned on, only the first piece of data can be inserted each time, and the rest will be rolled back.
code show as below:

try {
     DB::beginTransaction();
     foreach ($rightOrWrongRows as $row) {
     $question = array_combine($rightOrWrongHeader, $row);
     RightOrWrong::create([
         'question' => $question['question'],
         'answer' => $question['answer'],
         'scope' => $question['scope'],
         'degree' => 1,
         'exam_id' => $this->examId,
        ]);
     }
     DB::commit();
     } catch (\Exception $exception) {
        DB::rollBack();
        Log::info($exception->getMessage());
    }

If you close the transaction, you can insert multiple pieces of data

try {
     //DB::beginTransaction();
     foreach ($rightOrWrongRows as $row) {
     $question = array_combine($rightOrWrongHeader, $row);
     RightOrWrong::create([
         'question' => $question['question'],
         'answer' => $question['answer'],
         'scope' => $question['scope'],
         'degree' => 1,
         'exam_id' => $this->examId,
        ]);
     }
     //DB::commit();
     } catch (\Exception $exception) {
        //DB::rollBack();
        Log::info($exception->getMessage());
    }

Please help me solve this problem, I am a newbie.