Hi @Afzal_Rehmani, This might be an out of date or out of sync library. I just compiled “Combination” from above with no errors. I have a clean install of the just the following:
- Arduino IDE 2.3.2
- Seeed NRF52 Boards 1.1.8
- Seeed Arduino LSM6DS3 2.0.3
I remember installing “Adafruit SPIFlash” and “SdFat - Adafruit Fork” in the past, but it looks like they are not needed with the latest board package. (I haven’t played with this code for a while, so my memory is a bit out of date.) Maybe you have old versions of these libraries that need to be removed or updated. Also make sure you have selected the correct board.