My download failed, giving error; i changed a file line for it to succeed

[A-p-X]

Hello! tried to build the app, got this error

ninja: Entering directory `build' [1/5] Building translation po/hu/LC_ME.../com.github.johnfactotum.Foliate-hu.mo FAILED: po/hu/LC_MESSAGES/com.github.johnfactotum.Foliate.mo /usr/bin/msgfmt -o po/hu/LC_MESSAGES/com.github.johnfactotum.Foliate.mo ../po/hu.po ../po/hu.po:137:2: syntax error ../po/hu.po:137: keyword "d" unknown /usr/bin/msgfmt: found 2 fatal errors [3/5] Merging translations for data/com.github.johnfactotum.Foliate.desktop FAILED: data/com.github.johnfactotum.Foliate.desktop /usr/bin/meson --internal msgfmthelper --msgfmt=/usr/bin/msgfmt ../data/com.github.johnfactotum.Foliate.desktop.in data/com.github.johnfactotum.Foliate.desktop desktop ../data/../po ../data/../po/hu.po:137:2: syntax error ../data/../po/hu.po:137: keyword "d" unknown /usr/bin/msgfmt: found 2 fatal errors [4/5] Merging translations for data/com.github.johnfactotum.Foliate.metainfo.xml FAILED: data/com.github.johnfactotum.Foliate.metainfo.xml /usr/bin/meson --internal msgfmthelper --msgfmt=/usr/bin/msgfmt ../data/com.github.johnfactotum.Foliate.metainfo.xml.in data/com.github.johnfactotum.Foliate.metainfo.xml xml ../data/../po ../data/../po/hu.po:137:2: syntax error ../data/../po/hu.po:137: keyword "d" unknown /usr/bin/msgfmt: found 2 fatal errors ninja: build stopped: subcommand failed.

happened after i typed "sudo ninja -C build install" . İ have successfully downloaded it after changing the hu.po file line 137. İt had a name that wasn't in quotes.