The verification code displayed on the electric car card on WeChat cannot be empty.

1. Confirm whether you have received the verification code. If you don't receive the verification code, you can resend it.

2. Confirm whether the verification code is filled in correctly. When filling in the application form, carefully check whether the verification code is filled in correctly.

3. Confirm that the verification code is filled in correctly, but still prompt "Verification code cannot be empty" because there is an error in the system. You can try to resubmit the application or contact customer service.