¶ 1. Phenomenon Description
The screen displays "Error, key: 2121, Unknown Mistake"
¶ 2. Cause Analysis
Printing the gcode file failed,and the earlier version has appeared such a problem.
The gcode filename contains special characters.
¶ 3. Troubleshooting and Solution
¶ 3.1 Print verification using a random data model
If normal, it indicates that the machine has no issue.
¶ 3.2 Rename the model's G-code
do not use special symbols, you can simply name it using Arabic numerals.