The situation is:
- Some urls works fine but some NG.
- Preview works fine in editing but failed after posting.
Please refer to the attached screenshot.
figure 1. YouTube playlist after posting
figure 2. YouTube playlist in editing
And here I post the url again below:
https://www.youtube.com/watch?v=oR6G1MUMveE&list=PLoROMvodv4rMz-WbFQtNUsUElIh2cPmN9&index=1
https://www.youtube.com/watch?v=ilmw-ifriyw&list=PLxHlVV5gCbcM6Vyqa1vOKwyH2VuJ8l9BM&index=1