Faulty when stretching arms and legs. Please help me fix it


#1

Hello.
I rigging a character. And at the present time, it is faulty when stretching the arms and legs. It took me 2 weeks to fix, but without success.
Please help.
Error details (you can view the video here, or the attachment):
https://youtu.be/lscSrTNHtn8

//youtu.be/https://youtu.be/lscSrTNHtn8