The screen displays "Error, key: 2001, Unknown Exception"
![1.png](/k1/%E8%8B%B1%E6%96%87/2001/1.png)
Main thread error, the program crashed.
¶ 3. Troubleshooting and solution
- 3.1 Restart the printer.
- 3.2 If it occurs during the startup process, please skip the self-inspection according to Skip Startup Self-Check Process
- After checking the above steps, if the problem still cannot be solved,contact after-sales service cs@creality.com,please