1. Insufficient storage space: the storage space of the device is not enough to accommodate the files required by the starfish simulator, and the download process will not be completed. Please check whether the storage space of the device is enough, and clean up some unnecessary files to make more space.

2. Download source problem: There is a problem with the download source, such as server failure or link failure, which leads to download failure. You can replace other available download sources, or wait a while before downloading.