unable to find or decode device mapping bad firmware

[Treacy Yao]

"unable to find or decode device mapping bad firmware".I have enter DFU mode, but when use Dfuse, above information happen. What should I do? STM32F103VC

[Tesla DeLorean]

Probably would start by checking integrity of DFU file, and that VID/PID where correct.​

[Treacy Yao]

How can I check this problem? Below is my code which is generated by cube. I don't know how to fix the problem. Please help. I download duf.bin with STMFlashLoader Demo.