I'm using Arduino 1.8.13, but I can't change or delete the version of Spresense in the board manager.
Also, the board manager displays a red "java.langNullPointerException" at the bottom of the screen and does not proceed.
Where is the problem?
By the way, I can update other files.
The steps we performed are as follows:
I look forward to your kind cooperation.
spresense arduino
I also use Arduino IDE and sometimes encounter this problem.
under Arduino 15 in the following directory:
Are there multiple versions of folders or empty folders?
The location of the Arduino 15 directory varies from platform to platform, so please refer to the following:
https://www.indoorcorgielec.com/resources/arduinoide Settings/arduino-ide Library Installation and Directory Configuration/#Directory for Board_Configuration Information
If you do the installation with the destination folder or file open, you will be in this state.
The same thing was written on the Spresense FAQ site.
A in https://developer.sony.com/develop/spresense/docs/faq_ja.html#_spresense_arduino_board_packageInstallation Update Fails
Once you delete the folder version and reinstall it, it will be solved.
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