Dear Maintainer, Scenario (or steps to reproduce): 1. remove libreoffice-calc libreoffice-writer 2. eval `debconf-apt-progress --config ` 3. debconf-apt-progress --logfile /tmp/apt-get.log -- apt-get -fumy install libreoffice libreoffice-calc Observed error: Unpacking libreoffice (1:7.0.4-4+deb11u1) ... Setting up libreoffice-writer (1:7.0.4-4+deb11u1) ... Use of uninitialized value $template in exists at /usr/share/perl5/Debconf/Template.pm line 86, <GEN7> chunk 1. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 1. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 1. Use of uninitialized value $template in exists at /usr/share/perl5/Debconf/Template.pm line 86, <GEN7> chunk 2. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 2. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 2. Use of uninitialized value $template in exists at /usr/share/perl5/Debconf/Template.pm line 86, <GEN7> chunk 3. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 3. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 3. Use of uninitialized value $template in exists at /usr/share/perl5/Debconf/Template.pm line 86, <GEN7> chunk 4. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 4. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 4. Use of uninitialized value $template in exists at /usr/share/perl5/Debconf/Template.pm line 86, <GEN7> chunk 5. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 5. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 5. Creating config file /etc/libreoffice/registry/writer.xcd with new version Setting up libreoffice-calc (1:7.0.4-4+deb11u1) ... Use of uninitialized value $template in exists at /usr/share/perl5/Debconf/Template.pm line 86, <GEN7> chunk 1. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 1. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 1. Use of uninitialized value $template in exists at /usr/share/perl5/Debconf/Template.pm line 86, <GEN7> chunk 2. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 2. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 2. Use of uninitialized value $template in exists at /usr/share/perl5/Debconf/Template.pm line 86, <GEN7> chunk 3. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 3. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 3. Use of uninitialized value $template in exists at /usr/share/perl5/Debconf/Template.pm line 86, <GEN7> chunk 4. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 4. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 4. Use of uninitialized value $template in exists at /usr/share/perl5/Debconf/Template.pm line 86, <GEN7> chunk 5. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 5. Use of uninitialized value $item in exists at /usr/share/perl5/Debconf/DbDriver/Cache.pm line 40, <GEN7> chunk 5. Observation: error observed in libreoffice packages utilizing ucf for maintaining configuration files.