Conflict SDMMC + freertos cubie

Question

I am using CUBIDE for programming stm32l452. When I enable SDMMC without rtos then I can communicate with SD card from main function (outside of while loop). When I enable freertos without any changes in programm SDmmc stops communication, but mounting is successful. Who can help me to solve this problem I need to write SD from one task and parallely get data from another task via spi. Thanks.

`void main
    {
        f_mount(); // 
        f_open();
        f_write();
        f_close();

        while(1)
            {
               HAL_Delay(1000);
            }
    }`