Bilibili operates in different regions (Bilibili.tv for international users vs. Bilibili.com for China). The international version has cracked down on copyright infringement over the last two years. However, due to the "fandom" nature of the platform, versions of Harry Potter and the Sorcerer's Stone with Indonesian subtitles surface and disappear regularly.
Here’s a quick for finding and watching Harry Potter and the Sorcerer's Stone with Indonesian subtitles ( sub Indo ) on Bilibili. harry potter and the sorcerer 39-s stone sub indo bilibili