if len(str(board_sdkconfig)) > 2:

Author: Jason2866

builder/frameworks/arduino.py

@@ -579,7 +579,7 @@ def safe_remove_sdkconfig_files():
     print("entry custom_sdkconfig", entry_custom_sdkconfig)
     flag_custom_sdkconfig = True
 
-if len(board_sdkconfig) > 2:
+if len(str(board_sdkconfig)) > 2:
     flag_custom_sdkconfig = True
 
 extra_flags = (''.join([element for element in board.get("build.extra_flags", "")])).replace("-D", " ")