set CORE_DEBUG_LEVEL to 0 to hide annoying littlefs warnings. Can be overridden by pio_local.ini

platformio.ini

@@ -33,6 +33,7 @@ build_flags =
   -D CONFIG_ASYNC_TCP_STACK_SIZE=6144
   -D CONFIG_ASYNC_TCP_QUEUE=32
   -D CONFIG_ASYNC_TCP_TASK_PRIORITY=10
+  -D CORE_DEBUG_LEVEL=0
 
 unbuild_flags =
   ${common.core_unbuild_flags}