Compiler errors Ardoino 1.8.19 and 2.3.7

[marcrupprath]

Hello,

i got compilng error even for an empty scetch for Multix STM32Board

In Ardoino 2.3.7 it is like
exit status 0xffffffff

Compilation error: exit status 0xffffffff

In ardoino 18.19 it is like:

exit status -1
Fehler beim Kompilieren für das Board Multi X-in-1 STM32F103CB (128KB).
"Error during Compilation ...

Question ist why is it and how to fix
Thanks