Strange operation of Nx_WebServer example on STM32H735G-DK board

[jaehwanida]

I am experimenting with the function of reading a file by receiving a user command in the Nx_WebServer example of STM32H735G-DK. 
When connecting Stlink, input the t key in the Com port (115200 bps) that appears and press Enter to read the dashboard.html file. 
After performing this function, a fault occurs in tx_event_flags_get(&finish_flag, 0x01, TX_AND_CLEAR, &actual_flags, TX_WAIT_FOREVER); of console.c that is executed. 
This event flag is for communication between the UART receive interrupt and console_thread, and it works normally if filex io is not performed. 
Please help me figure out why this problem occurs after calling the filex API.

[jaehwanida]

Hello

after increasing stack size of console thread into 4K,  the problem disappeared.

Thanks