Using Aurdino IDe 1.89ver and after adding the below link under “Preferences” and “Additional BoardManager”. Then opening “BoardManager” and the get an error note at the bottom of the pop-up box.
https://raw.githubusercontent.com/spark … index.json
Here are some of the errors:
Error downloading https://downloads.arduino.cc/packages/p … index.json
java.lang.RuntimeException: java.lang.Exception: Error downloading https://downloads.arduino.cc/packages/p … index.json
at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onUpdatePressed$1(ContributionManagerUI.java:150)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.Exception: Error downloading https://downloads.arduino.cc/packages/p … index.json
at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:139)
at cc.arduino.contributions.packages.ContributionInstaller.download(ContributionInstaller.java:333)
at cc.arduino.contributions.packages.ContributionInstaller.downloadIndexAndSignature(ContributionInstaller.java:307)
at cc.arduino.contributions.packages.ContributionInstaller.updateIndex(ContributionInstaller.java:285)
at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onUpdatePressed$1(ContributionManagerUI.java:146)
… 1 more
Caused by: java.nio.file.FileSystemException: C:\Users\HPi7\AppData\Local\Arduino15\package_index.json.tmp: The process cannot access the file because it is being used by another process.