freeRTOS project don't compile
You must include one of the heap management files, heap_1.c to heap_5.c, as described here: http://www.freertos.org/a00111.html
Related content
Development tools for Zephyr on STM32
Workbench for Zephyr: VS Code extension to set up, build, flash and debug Zephyr applications on STM32.
Devicetree manager: browse, edit and visualize Zephyr devicetree, STM32CubeMX-like for Zephyr.