It seems LibreOffice is unable to discover a working gpg setup on your machine. To further troubleshoot this, it would be easiest if you could install a debug-enabled version, e.g. from here:
https://dev-builds.libreoffice.org/daily/master/Linux-rpm_deb-x86@87-TDF-dbg/current/
Then run it from a terminal, with the following environment variable set:
export SAL_LOG="+WARN.+INFO.xmlsecurity"
and provide a link to the output (please review for potential private information, the log can be quite verbose).
It seems LibreOffice is unable to discover a working gpg setup on your machine. To further troubleshoot this, it would be easiest if you could install a debug-enabled version, e.g. from here:
https:/ /dev-builds. libreoffice. org/daily/ master/ Linux-rpm_ deb-x86@ 87-TDF- dbg/current/
Then run it from a terminal, with the following environment variable set:
export SAL_LOG= "+WARN. +INFO.xmlsecuri ty"
and provide a link to the output (please review for potential private information, the log can be quite verbose).