linuxdeploy-symlink-error

$ linuxdeploy ... -e out/appdir2//usr/bin/beast
linuxdeploy version 1-alpha (git commit ID c45cd46), <local dev build> built on 2019-11-19 10:36:25 UTC
ERROR: Could not find dependency: libffmpeg.so
Failed to deploy executable: out/appdir2//usr/bin/beast

$ ll out/appdir2//usr/bin/beast
lrwxrwxrwx 1 timj timj 18 Dez  9 21:22 out/appdir2//usr/bin/beast -> ../electron/ebeast*
$ ldd out/appdir2//usr/bin/beast
	linux-vdso.so.1 (0x00007fff853ad000)
	libffmpeg.so => not found
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x000014c570b09000)
$ ldd out/appdir2//usr/electron/ebeast
	linux-vdso.so.1 (0x00007ffe1d344000)
	libffmpeg.so => /var/tmp/beast/out/appdir2//usr/electron/libffmpeg.so (0x00001455c0db4000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00001455c0bb0000)