When trying to use qdigidoc4 (version 188.8.131.52) on Ubuntu 20.04, and trying to sign a container, signing fails (both with ID card and Mobile ID) and I get the following message:
ASiC_E.cpp:347 Failed to sign container. SignatureXAdES_LT.cpp:227 Could not find certificate issuer 'CN=ESTEID-SK 2015,organizationIdentifier=NTREE-10747013,O=AS Sertifitseerimiskeskus,C=EE' in certificate store.
Also viewing signed containers fails (all signatures are marked as "unknown").
How to run qdigidoc4 on Ubuntu 20.04?