Esp32s3 N16R8 fails always with LittleFS

This output is just as “default_8MB.csv“ and it is shown in “esp32-s3-devkitc-1.json“,
it is not your “partitions.csv“.
You may confirm the location of your “partitions.csv“. Is it same folder of “default_8MB.csv“ ?

I think it is better to refer : Partition scheme not working