Xiao board disappeared from board manager?!?

Hi,
my Xiao was working fine for months, and as recently as a few hours ago. It disappeared from Arduino IDE 1.8.16 list.
This guy had the same problem: Other guy
Suggestions for similar problem with ESP8266 (removing all entries from preferences>other board managers>) and repopulating did not work. Trying to install on different version of IDE (1.8.15) did not work. The .json appears in the list in preferences but not in the Board Manager selection.

error code is:
Skipping contributed index file C:\Users\patte\Documents\ArduinoData\package_seeeduino_boards_index.json, parsing error occured:
com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type long from String “12765957s”: not a valid Long value
at [Source: (FileInputStream); line: 3655, column: 14] (through reference chain: cc.arduino.contributions.packages.ContributionsIndex[“packages”]->java.util.ArrayList[0]->cc.arduino.contributions.packages.ContributedPackage[“tools”]->java.util.ArrayList[45]->cc.arduino.contributions.packages.ContributedTool[“systems”]->java.util.ArrayList[0]->cc.arduino.contributions.packages.HostDependentDownloadableContribution[“size”])
Skipping contributed index file C:\Users\patte\Documents\ArduinoData\package_seeeduino_boards_index.json, parsing error occured:
com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type long from String “12765957s”: not a valid Long value
at [Source: (FileInputStream); line: 3655, column: 14] (through reference chain: cc.arduino.contributions.packages.ContributionsIndex[“packages”]->java.util.ArrayList[0]->cc.arduino.contributions.packages.ContributedPackage[“tools”]->java.util.ArrayList[45]->cc.arduino.contributions.packages.ContributedTool[“systems”]->java.util.ArrayList[0]->cc.arduino.contributions.packages.HostDependentDownloadableContribution[“size”])

Any help would be appreciated.
I don’t know what to try next.
Thanks.

I have the same problem.
According to a development member, the problem will be solved soon.

Note: This is probably a syntax error. The letter “s” is extra.

Thanks for touching base, Blizzard. I appreciate it.

The new package works. Issue resolved, at least as concerns the Xiao.
:blush: