I am using advanced_https_ota example but upload will not go any further.

[daagii0627]

I am using advanced_https_ota example

I (5659) advanced_https_ota_example: Starting Advanced OTA example
I (5659) advanced_https_ota_example: OTA started
I (5679) gpio: GPIO[2]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0
I (5679) main_task: Returned from app_main()
I (6259) advanced_https_ota_example: Connected to server
I (6269) esp_https_ota: Starting OTA...
I (6269) esp_https_ota: Writing to partition subtype 16 at offset 0x110000
I (6269) advanced_https_ota_example: Reading Image Description
I (6279) advanced_https_ota_example: Running firmware version: 1.1
I (6289) advanced_https_ota_example: Verifying chip id of new image: 0

But it will not go any further,so it stopped. What is wrong?