Erros by "sudo yunohost tools update"

get Errors by updating the system. What does this mean?

admin@my:~$ sudo yunohost tools update                                                                 
Info: Fetching available upgrades for system packages...
Warning: W: An error occurred during the signature verification. The repository is not updated and the 
previous index files will be used. GPG error: buster InRelease: The follo
wing signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key <deb@sury.o
Warning: W: Failed to fetch  The following signatu
res were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key <>         
Warning: W: Some index files failed to download. They have been ignored, or old ones used instead.
Error: Something went wrong while updating the cache of APT (Debian's package manager). Here is a dump 
of the sources.list lines, which might help identify problematic lines:                                
sources.list:deb buster main contrib non-free                       
sources.list:deb buster-updates main contrib non-free               
sources.list:deb buster/updates main contrib non-free                      
sources.list.d/yunohost.list:deb buster stable                       
sources.list.d/extra_php_version.list:deb buster main                   
sources.list.d/armbian.list:deb buster main buster-utils buster-desktop         
Info: Updating application catalog…
Success! The application catalog has been updated!

thanks for help

c.f. Recurring issues during system updates these days, and how to fix them

1 Like

THANKS so much

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