java.lang.NullPointerException in Boards Manager updating "Arduino SAMD Boards (32-bits ARM Cortex-M0+)"

[jverive]

When using Boards Manager, the "Arduino SAMD Boards (32-bits ARM Cortex-M0+)" definition shows up as Updatable, but when I click on "Update" I get an error message:

java.lang.NullPointerException

in the console I see:

java.lang.NullPointerException
java.lang.RuntimeException: java.lang.NullPointerException
at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onInstallPressed$2(ContributionManagerUI.java:175)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
at cc.arduino.contributions.packages.ContributionInstaller.remove(ContributionInstaller.java:276)
at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onInstallPressed$2(ContributionManagerUI.java:170)
... 1 more

Because of this error I am unable to update the definitions for the affected boards.