Background

I generated a taproot assets address with the command:

tapcli addrs new --group_key 03e388268bb2d40e91730966cfafc0be0fa300ac861045f20f14bead238d393b35 --proof_courier_addr authmailbox+universerpc://signet.laisee.org:8443

This succeeds, but as there is no universe listening on this port, tapd crashes with the following error:

received critical error from sub-server (taproot-assets), shutting down: unable to start mailbox subscription: error during authentication, before sending subscribe: server sent unexpected error

I have attached logs below.

2025-12-10_tapd.log

Your environment

tapd 0.7.0-alpha commit=v0.7.0
litd 0.16.0-alpha (integrated mode)

tapcli getinfo                       # version of `tapd`, `lnd`, and network
uname -mrsv                          # operating system 
bitcoind --version || btcd --version # version of `btcd`, `bitcoind`, or other backend