When you use an ESP-01 and Arduino together with Blynk, the ESP-01 is used as a WiFi modem for the Arduino.
For this to work, the ESP-01 needs to be running the factory AT firmware, and the sketch needs to be uploaded to the Arduino.
It appears that you have uploaded your sketch to the ESP-01, thus overwriting the factory AT firmware.
If you want to rectify this then you’ll need to re-install the ESP-01 AT firmware, and change your sketch so that it uses the correct libraries for the Arduino.
Pete.