What you want to ask is why the electronic contract of national student loan can't be downloaded. The reasons are as follows. According to Yi Xian's inquiry. Com official website shows.

1. Network problem: An error occurred during downloading due to unstable network connection or other reasons. You can try downloading using another network environment or device, or try downloading again later.

2. File damage: In the process of transmission or storage, the receipt file of colleges and universities may be damaged, which makes it impossible to download it correctly. You can try to download the file again, or contact the relevant departments of colleges and universities to provide available repair or replacement files.