jhbuild gnome-shell build error

[3/140] Generating org.gnome.Extensions.metainfo.xml_subprojects@extensions-app@data@metainfo_merge with a custom command
FAILED: subprojects/extensions-app/data/metainfo/org.gnome.Extensions.metainfo.xml
/home/gnomedev/jhbuild/install/bin/meson --internal msgfmthelper ../../../../jhbuild/checkout/gnome-shell/subprojects/extensions-app/data/metainfo/org.gnome.Extensions.metainfo.xml.in subprojects/extensions-app/data/metainfo/org.gnome.Extensions.metainfo.xml xml /home/gnomedev/jhbuild/checkout/gnome-shell/subprojects/extensions-app/../../po
msgfmt: cannot locate ITS rules for ../../../../jhbuild/checkout/gnome-shell/subprojects/extensions-app/data/metainfo/org.gnome.Extensions.metainfo.xml.in
ninja: build stopped: subcommand failed.
*** Error during phase build of gnome-shell: ########## Error running ninja   *** [80/80]