INDEX build failed for 12.x

INDEX build failed with errors:
Generating INDEX-12 - please wait..--- describe.accessibility ---
--- describe.arabic ---
--- describe.archivers ---
--- describe.astro ---
--- describe.audio ---
--- describe.benchmarks ---
--- describe.biology ---
--- describe.cad ---
--- describe.chinese ---
--- describe.comms ---
--- describe.converters ---
--- describe.databases ---
--- describe.deskutils ---
--- describe.devel ---
--- describe.dns ---
--- describe.editors ---
--- describe.emulators ---
--- describe.finance ---
--- describe.french ---
--- describe.ftp ---
[...]
--- describe.print ---
--- describe.russian ---
--- describe.science ---
--- describe.security ---
--- describe.shells ---
--- describe.sysutils ---
--- describe.textproc ---
--- describe.ukrainian ---
--- describe.vietnamese ---
--- describe.www ---
--- describe.x11 ---
--- describe.x11-clocks ---
--- describe.x11-drivers ---
--- describe.x11-fm ---
--- describe.x11-fonts ---
--- describe.x11-servers ---
--- describe.x11-themes ---
--- describe.x11-toolkits ---
--- describe.x11-wm ---
 Done.
make_index: /home/indexbuild/tindex/ports/biology/py-crossmap: no entry for /home/indexbuild/tindex/ports/biology/py-bigwig

Committers on the hook:
brd@FreeBSD.org jgh@FreeBSD.org jwb@FreeBSD.org nc@FreeBSD.org 

Most recent Git update was:
biology/Makefile
biology/py-pybigwig/Makefile
biology/py-pybigwig/distinfo
biology/py-pybigwig/pkg-descr
deskutils/menumaker/Makefile
deskutils/menumaker/distinfo
devel/newt/Makefile
devel/newt/pkg-plist
sysutils/consul/Makefile
sysutils/consul/distinfo
textproc/consul-template/Makefile
textproc/consul-template/distinfo