[Bug] Installation problems

[BroekerFrank]

I want to install the MegaTiny Core in the Arduino IDE V1.8.19. I know I should use the V1.8.13 :-) But i think this is a general problem.

After entering the Boards URL: http://drazzy.com/package_drazzy.com_index.json
and hit the install Button in the boards manager (selecting the MegaTinyCore V2.6.9) I get this error messages:

Fehler beim Herunterladen von https://spencekondetoolchains.s3.amazonaws.com/avr-gcc-7.3.0-atmel3.6.1-azduino7b-i686-w64-mingw32.tar.bz2
java.lang.RuntimeException: java.lang.Exception: Fehler beim Herunterladen von https://spencekondetoolchains.s3.amazonaws.com/avr-gcc-7.3.0-atmel3.6.1-azduino7b-i686-w64-mingw32.tar.bz2
at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onInstallPressed$2(ContributionManagerUI.java:179)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.Exception: Fehler beim Herunterladen von https://spencekondetoolchains.s3.amazonaws.com/avr-gcc-7.3.0-atmel3.6.1-azduino7b-i686-w64-mingw32.tar.bz2
at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:145)
at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:79)
at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:56)
at cc.arduino.contributions.packages.ContributionInstaller.install(ContributionInstaller.java:108)
at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onInstallPressed$2(ContributionManagerUI.java:172)
... 1 more
Caused by: java.io.IOException: Received invalid http status code from server: 404
at cc.arduino.utils.network.FileDownloader.openConnectionAndFillTheFile(FileDownloader.java:222)
at cc.arduino.utils.network.FileDownloader.downloadFile(FileDownloader.java:176)
at cc.arduino.utils.network.FileDownloader.download(FileDownloader.java:125)
at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:143)
... 5 more

So I couldn't download this file:
https://spencekondetoolchains.s3.amazonaws.com/avr-gcc-7.3.0-atmel3.6.1-azduino7b-i686-w64-mingw32.tar.bz2

Any Idea/help?

best regards
Frank