What is the identity of this error?

[장우0D44]

I put a video on the timeline and it turned out like this.

And then the Premier went down.

[John T Smith]

Some things to do, and more information needed for someone to help...
-Troubleshooting https://community.adobe.com/t5/Premiere-Pro/Unofficial-Premiere-Pro-Troubleshooting-Guide/td-p/87892...
-PPro Editing Information FAQ https://community.adobe.com/t5/Premiere-Pro/FAQ-What-information-should-I-provide-when-asking-a-ques...
-Mac only https://community.adobe.com/t5/Premiere-Pro/FAQ-Basic-Troubleshooting-amp-Maintenance-for-Premiere-P...

[Bruce Bullis]

An error occurred while importing the file; 'low-level exception' suggests that no additional error information was passed from the Importer, to PPro.