Can't send pictures or audio

[HZzz2]

I encountered an issue while running the send image example in the examples directory of the GitHub project. When running the provided code, the image failed to send successfully. To further investigate the problem, I modified the example code to send an audio file instead, but it still didn't work.
upload_image
Could you please provide some guidance and suggestions to help me troubleshoot and resolve this issue?

I would greatly appreciate your assistance. Thank you in advance!