Having Problem with internal memory for XIAO nrf52840 BLE Sense

Good afternoon everyone.

I am am trying to get my XIAO nrf52840 to read/write from the internal memory. Everytime I try to use any kind of LittleFS.h library, it does not recognize the library. I have tried the adafruit version, the arduino version and just using LittleFS.h. I am using Arduino IDE and using the mbed version of the nrf52840 BLE Sense board.

Any insight would be great. I can get the QSPI code on the Seeedstudio main page to work, but looking for a condense simple code.

Thank you.