Unable to create a folder to save the sketch: MKDIR sketch

This problem occurs after you compile , Deleted again Arduino IDE In the case of documents , For example, there were three files

How did this happen ？

Generally speaking , This problem occurs after compilation , Deleted the file again , For example, after compilation , You had these documents

LEDTest.ino

driver.cpp

driver.h

 

Now? , Because of some compatibility considerations, I deleted a few and created a new one

LEDTest.ino

driver.ino

 

This problem will arise at this time   unable to create a folder to save the sketch: mkdir sketch: Access is denied.

 

It belongs to a long-term Bug, Even when it comes to Arduino IDE 1.8.13 There is still this problem , even to the extent that , hear 1.9.0 Beta This is the case , Very easy to reproduce .

 

How to solve

Solve this problem , The easiest way is , Create a new project , Copy all the code .

 

The second method is to update to 1.8.15 above , I tried to install 1.8.15, There is no such problem .