mosh-server: libprotobuf.so.21 missing

[moonman]

$this->bbcode_second_pass_code('', 'Name : mosh
Version : 1.3.2-11
Description : Mobile shell, surviving disconnects with local echo and line editing
Architecture : armv6h
URL : https://mosh.org/
Licenses : GPL3
Groups : None
Provides : None
Depends On : libutempter openssh openssl perl-io-tty protobuf
Optional Deps : None
Required By : None
Optional For : None
Conflicts With : None
Replaces : None
Installed Size : 568.03 KiB
Packager : Arch Linux ARM Build System <builder+xu6@archlinuxarm.org>
Build Date : Sun Dec 8 17:22:59 2019
Install Date : Tue Dec 17 16:35:18 2019
Install Reason : Explicitly installed
Install Script : No
Validated By : SHA-256 Sum
')

$this->bbcode_second_pass_code('', 'mosh-server
mosh-server: error while loading shared libraries: libprotobuf.so.21: cannot open shared object file: No such file or directory
')

$this->bbcode_second_pass_code('', ' ldd `which mosh-server`
linux-vdso.so.1 (0x7ec1a000)
libncursesw.so.6 => /usr/lib/libncursesw.so.6 (0x76eb2000)
libprotobuf.so.21 => not found
libcrypto.so.1.1 => /usr/lib/libcrypto.so.1.1 (0x76caf000)
libutil.so.1 => /usr/lib/libutil.so.1 (0x76c9c000)
libz.so.1 => /usr/lib/libz.so.1 (0x76c77000)
libutempter.so.0 => /usr/lib/libutempter.so.0 (0x76c65000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x76b14000)
libm.so.6 => /usr/lib/libm.so.6 (0x76aa5000)
libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x76a78000)
libc.so.6 => /usr/lib/libc.so.6 (0x7692d000)
/lib/ld-linux-armhf.so.3 => /usr/lib/ld-linux-armhf.so.3 (0x76f7f000)
libdl.so.2 => /usr/lib/libdl.so.2 (0x7691a000)
libpthread.so.0 => /usr/lib/libpthread.so.0 (0x768f0000)')

$this->bbcode_second_pass_code('', 'pacman -Qi protobuf
Name : protobuf
Version : 3.11.1-2
Description : Protocol Buffers - Google's data interchange format
Architecture : armv6h
URL : https://developers.google.com/protocol-buffers/
Licenses : BSD
Groups : None
Provides : libprotoc.so=22-32 libprotobuf.so=22-32 libprotobuf-lite.so=22-32
Depends On : gcc-libs glibc zlib
Optional Deps : None
Required By : mosh protobuf-c
Optional For : None
Conflicts With : None
Replaces : protobuf-cpp
Installed Size : 7.72 MiB
Packager : Arch Linux ARM Build System <builder+xu6@archlinuxarm.org>
Build Date : Sun Dec 15 21:25:02 2019
Install Date : Tue Dec 17 15:31:16 2019
Install Reason : Installed as a dependency for another package
Install Script : No
Validated By : SHA-256 Sum')


$this->bbcode_second_pass_code('', 'locate libprotobuf
/usr/lib/libprotobuf-c.so
/usr/lib/libprotobuf-c.so.1
/usr/lib/libprotobuf-c.so.1.0.0
/usr/lib/libprotobuf-lite.so
/usr/lib/libprotobuf-lite.so.22
/usr/lib/libprotobuf-lite.so.22.0.1
/usr/lib/libprotobuf.so
/usr/lib/libprotobuf.so.22
/usr/lib/libprotobuf.so.22.0.1
/usr/lib/pkgconfig/libprotobuf-c.pc')