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Installing and running mpack on a fresh ubuntu (Algo VPN) instance results in *** buffer overflow detected ***: terminated

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I have created an Ubuntu 20.04.2 LTS instance via the Algo VPN scripts using google cloud. I SSH into the instance for the first time and execute the following simplified test case which results in mpack crashing. Unfortunately I am not overly familiar with c/linux debugging and crash analysis. Does anyone know how I would go about fixing this?

algo@non-interactive-test-3:~$ sudo apt install mpack
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following package was automatically installed and is no longer required:
  libnuma1
Use 'sudo apt autoremove' to remove it.
Suggested packages:
  mail-transport-agent inews
The following NEW packages will be installed:
  mpack
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 35.5 kB of archives.
After this operation, 96.3 kB of additional disk space will be used.
Get:1 http://europe-west2.gce.archive.ubuntu.com/ubuntu focal/universe amd64 mpack amd64 1.6-8.2 [35.5 kB]
Fetched 35.5 kB in 0s (750 kB/s)
debconf: unable to initialize frontend: Dialog
debconf: (Dialog frontend requires a screen at least 13 lines tall and 31 columns wide.)
debconf: falling back to frontend: Readline
Selecting previously unselected package mpack.
(Reading database ... 64638 files and directories currently installed.)
Preparing to unpack .../mpack_1.6-8.2_amd64.deb ...
Unpacking mpack (1.6-8.2) ...
Setting up mpack (1.6-8.2) ...
Processing triggers for man-db (2.9.1-1) ...

algo@non-interactive-test-3:~$ echo test > test
algo@non-interactive-test-3:~$ mpack -s t -o output test
*** buffer overflow detected ***: terminated
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