You can check if a PO file is valid with the following command:

        msgfmt -c -o /dev/null <po file>
      

The following errors were found in octavia 's PO files:

debconf: debian/octavia-health-manager.templates:4: Wrong input line:
 _Description: Configure health-manager with debconf ?
debconf: debian/octavia-health-manager.templates:5: Wrong input line:
  Octavia health-manager needs to have bind_ip,
debconf: debian/octavia-health-manager.templates:6: Wrong input line:
  bind_port and heartbeat_key configured.
debconf: debian/octavia-health-manager.templates:7: Wrong input line:
  This can be configured via debconf.
debconf: debian/octavia-health-manager.templates:12: Wrong input line:
 _Description: Value for health_manager bind_ip:
debconf: debian/octavia-health-manager.templates:13: Wrong input line:
  IP address of Octavia health_manager on which will listen for heart beats.
debconf: debian/octavia-health-manager.templates:14: Wrong input line:
  This IP has to be in external octavia LB network to be able communicate
debconf: debian/octavia-health-manager.templates:15: Wrong input line:
  with amphora instances.
debconf: debian/octavia-health-manager.templates:16: Wrong input line:
  This value will be set in config block health_manager bind_ip.
debconf: debian/octavia-health-manager.templates:21: Wrong input line:
 _Description: Value for health_manager bind_port:
debconf: debian/octavia-health-manager.templates:22: Wrong input line:
  IP port of Octavia health_manager on which will listen for heart beats.
debconf: debian/octavia-health-manager.templates:23: Wrong input line:
  This value will be set in config block health_manager bind_port.
debconf: debian/octavia-health-manager.templates:28: Wrong input line:
 _Description: Octavia's hearthbeat_key:
debconf: debian/octavia-health-manager.templates:29: Wrong input line:
  Key used to validate amphora sending the message.
debconf: debian/octavia-health-manager.templates:30: Wrong input line:
  This value will be set in config block health_manager, heartbeat_key.
podebconf: file debian/po/templates.pot not found
podebconf: file debian/po/POTFILES.in not found
      

Please ask the translator (identified by the Last-Translator field in the PO file), the language team (identified by the Language-Team field) or debian-i18n for a fix.