Self-hosting Atuin under directory (not exclusive domain) with Apache as reverse proxy?

[Flowdalic]

This post has two concerns:

1. It is about self-hosting Autin with Apache as reverse proxy
2. it is about "Error: error decoding response body: expected value at line 1 column 1" when trying to login

I am not sure if 2. is caused by me incorrectly configuring 1., but in any case, the error message in 2. could maybe improved. In fact I am stuck with 1. and miss general tooling, command line switches and techniques to diagnose the root cause. Of course, please do not rule out that I am just incompetent.
So here is what I did

1. Atuin server, configured to listen on localhost:8888. The server seems to be running fine and has access to postgres
2. Apache virtual host, with

ProxyPass "/atuin" "http://localhost:8888/"
ProxyPassReverse "/atuin" "http://localhost:8888/"

in its config. And, in fact, accessing https://mydomain.org/atuin, returns

{"homage":"\"Through the fathomless deeps of space swims the star turtle Great A'Tuin, bearing on its back the four giant elephants who carry on their shoulders the mass of the Discworld.\" -- Sir Terry Pratchett","version":"15.0.0"}

But I am not sure if this is supposed to happen. I only suspect that this is the atuin server talking because the version number. I am also not sure if I should set path = "/autin" in atuin's server.toml.

And upon login, I get

$ atuin login                                                                                                                                                                                                                                           
Please enter username: flow
Please enter encryption key [blank to use existing key file]:    
Please enter password: 
Error: error decoding response body: expected value at line 1 column 1

Caused by:
    expected value at line 1 column 1

Location:
    /data-scratch/var-tmp/portage/app-shells/atuin-15.0.0/work/atuin-15.0.0/atuin-client/src/api_client.rs:83:21

I would appreciate any help setting up my atuin server. Thanks in advance. :)

^{This is/was issue #1099, but since it got no reply, I am trying my luck in the discussion forum (which is probably are more suitable place anyway).}

[Flowdalic]

Turns out my configuration had an, at least sylistically, similar issue. The first argument of the ProxyPass* directive from the Apache configuration needs a terminating slash (/).

ProxyPass "/atuin/" "http://localhost:8888/"
ProxyPassReverse "/atuin/" "http://localhost:8888/"

it seems to work now. Note that I did not set the path option in atuin's server configuration.