Problem in getting code for Wifi 1010 compiled

Dear community,

I just bought a new Mkr Wifi 1010 and try to make it running by just have a simple LED flashing. But already during compilation it gives back an error message:

Arduino: 1.8.9 (Windows Store 1.8.21.0) (Windows 10), Board: "Arduino MKR WiFi 1010"

In file included from C:\Users\Administrator\Documents\ArduinoData\packages\arduino\tools\CMSIS-Atmel\1.2.0/CMSIS/Device/ATMEL/samd21/include/samd21.h:69:0,

from C:\Users\Administrator\Documents\ArduinoData\packages\arduino\tools\CMSIS-Atmel\1.2.0/CMSIS/Device/ATMEL/samd.h:105,

from C:\Users\Administrator\Documents\ArduinoData\packages\arduino\tools\CMSIS-Atmel\1.2.0/CMSIS/Device/ATMEL/sam.h:540,

from C:\Users\Administrator\Documents\ArduinoData\packages\arduino\hardware\samd\1.8.4\cores\arduino/Arduino.h:48,

from sketch\sketch_dec30a.ino.cpp:1:

C:\Users\Administrator\Documents\ArduinoData\packages\arduino\tools\CMSIS-Atmel\1.2.0/CMSIS/Device/ATMEL/samd21/include/samd21g18a.h:237:10: fatal error: core_cm0plus.h: No such file or directory

#include <core_cm0plus.h>

^~~~~~~~~~~~~~~~

compilation terminated.

exit status 1
Fehler beim Kompilieren für das Board Arduino MKR WiFi 1010.

Dieser Bericht wäre detaillierter, wenn die Option
"Ausführliche Ausgabe während der Kompilierung"
in Datei -> Voreinstellungen aktiviert wäre.

So what I am doing wrong?

Best regards Peter

the boards package installation didn't finish.
to reinstall, install and older version of the SAMD boards package and then again the newest

Excellant, you made my day ;D Thanks very much. it is now working.