If you are looking for a report related to this specific video, it may be associated with one of the following:
The string is likely a internal database ID. If you found this in a browser's "Inspect Element" tool or a network log, it refers to the original source video file hosted on a server. 0h2nulwl8p074xi2zhkjj_source.mp4
The "source" suffix usually indicates the highest-quality version of a video before it is compressed for different streaming resolutions. If you are looking for a report related
Knowing the website or application where it appeared would help in identifying the specific content or the type of report you need. 0h2nulwl8p074xi2zhkjj_source.mp4
Reporting eight online harms with Report Harmful Content - Facebook