Can't Configure ESP-01 With AT Commands Using KL25Z

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Hi there,

I want to configure the ESP-01 wifi module with AT commands using KL25Z board. But my UART configuration isn't working and I don't receive any response from ESP-01 module

I'm using MCUXpresso and I've attached the code. As you can see below, I've connected my laptop and KL25Z with miniusb. The connection between KL25Z and ESP-01 is as follows:

VDD -> P3V3
GND -> GND
Tx -> Rx
Rx -> Tx

Baud rates are set as 115200 and UART is in normal 8-bit without parity and 1 stop bit.

I know this forum might not be the right place for my question but it's urgent and I need your help. So I'll appreciate your help.