Runtime error ffmpeg @4.4_2

[cave-canem]

The ffmpeg port builds successfully, but a runtime error occurs:

ffmpeg -version
dyld: Library not loaded: @rpath/libdav1d.5.dylib
  Referenced from: /opt/MacPorts/bin/ffmpeg
  Reason: image not found
Trace/BPT trap: 5

port installed dav1d
The following ports are currently installed:
  dav1d @0.9.1_0 (active)

sudo find -x / -name "libdav1d.5.dylib" -print
Password:
/opt/MacPorts/lib/libdav1d.5.dylib

That being said, ffmpeg @ 4.4_0 works without any problems:

ffmpeg -version
ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers
built with clang version 10.0.1
configuration: --prefix=/opt/MacPorts --enable-swscale --enable-avfilter --enable-avresample --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-librsvg --enable-libtheora --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libsoxr --enable-libspeex --enable-libass --enable-libbluray --enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype --enable-libfribidi --disable-libjack --disable-libopencore-amrnb --disable-libopencore-amrwb --disable-indev=jack --enable-opencl --disable-outdev=xv --enable-audiotoolbox --enable-videotoolbox --enable-sdl2 --disable-securetransport --mandir=/opt/MacPorts/share/man --enable-shared --enable-pthreads --cc=/opt/MacPorts/bin/clang --enable-libdav1d --arch=x86_64 --enable-x86asm --enable-librtmp --enable-nonfree --enable-libfdk-aac
libavutil      56. 70.100 / 56. 70.100
libavcodec     58.134.100 / 58.134.100
libavformat    58. 76.100 / 58. 76.100
libavdevice    58. 13.100 / 58. 13.100
libavfilter     7.110.100 /  7.110.100
libavresample   4.  0.  0 /  4.  0.  0
libswscale      5.  9.100 /  5.  9.100
libswresample   3.  9.100 /  3.  9.100

port -v installed active and ffmpeg
The following ports are currently installed:
  ffmpeg @4.4_0+librtmp+nonfree+x11-gpl2 (active) platform='darwin 13' archs='x86_64' date='2021-05-25T12:28:51+0300'