Assertion failed: (buf_len != 0), function soread, file src/socket.c, line 183.

I am running Qemu 5.1.0 on MacOS Catalina 10.15.5 (19F101) to virtualize a raspberry Pi using the image 2020-08-20-raspios-buster-armhf-lite. When running docker build inside my virtual machine, I keep getting the following error while docker is fetching data from the network, which seems to come from libslirp. The failed assertion kills qemu, which makes working with this VM untenable.

Assertion failed: (buf_len != 0), function soread, file /private/tmp/qemu-20200813-13289-1g95loa/qemu-5.1.0/slirp/src/socket.c, line 183.