Failed to allocate TLS context

On trying to enable https from working http setup for the FOTA/DFU using steps provided in the following link: https://github.com/aws-samples/aws-iot-job-over-https-for-nordic-semiconductor-nrf9160-dk

I came across the following issue/error:

my tools and setup:

IDE : VS Code

Programmer : Stm32Cube programmer

Debugger: St-link

OS: Zephyr 3.6

MCU: Stm32u5 series

Bootloader: mcuboot

Any ideas why this error is reported after enabling the https protocol instead of http for the download client of firmware image update?

Error: net_sock_tls: Failed to allocate TLS context

Just to clarify that the FOTA ( Firmware update over the air) works ok with nrf fota libraries and aws job/fota libraries on stm32 device while image download is enabled via http protocol.