There is an error in the 1. document. The format of the submitted paper is incorrect or the submitted document is too large.

2. There are too many words in the paper, and there are word limits in the paper detection of HowNet, and different detection systems have different restrictions.

3. When submitting the paper, the information is incomplete, and the title and author information of the paper are not filled in.

4. Browsers are incompatible, and each detection system has its own applicable browser. When uploading papers, you should strictly follow the requirements.