HTTP.jl v2.12 incorrect header check (code: -3)

General Usage
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1

I’m trying to migrate from v1.11 to v2.12 to call an Inmation rest API. It worked for v1.11 but not v2.12, and the error stacktrace I received is shown below.

ERROR: CodecZlib.ZlibError("incorrect header check (code: -3)")
Stacktrace:
  [1] changemode!(stream::TranscodingStreams.TranscodingStream{CodecZlib.ZlibDecompressor, HTTP._BodyIO{…}}, newmode::Symbol)
    @ TranscodingStreams C:\Users\usr\.julia\packages\TranscodingStreams\O3BYF\src\stream.jl:794
  [2] callprocess(stream::TranscodingStreams.TranscodingStream{…}, inbuf::TranscodingStreams.Buffer, outbuf::TranscodingStreams.Buffer)
    @ TranscodingStreams C:\Users\usr\.julia\packages\TranscodingStreams\O3BYF\src\stream.jl:707
  [3] fillbuffer(stream::TranscodingStreams.TranscodingStream{CodecZlib.ZlibDecompressor, HTTP._BodyIO{…}}; eager::Bool)
    @ TranscodingStreams C:\Users\usr\.julia\packages\TranscodingStreams\O3BYF\src\stream.jl:624
  [4] fillbuffer
    @ C:\Users\usr\.julia\packages\TranscodingStreams\O3BYF\src\stream.jl:610 [inlined]
  [5] sloweof(stream::TranscodingStreams.TranscodingStream{CodecZlib.ZlibDecompressor, HTTP._BodyIO{HTTP.H2Body}})
    @ TranscodingStreams C:\Users\usr\.julia\packages\TranscodingStreams\O3BYF\src\stream.jl:222
  [6] eof
    @ C:\Users\usr\.julia\packages\TranscodingStreams\O3BYF\src\stream.jl:213 [inlined]
  [7] readbytes!(stream::TranscodingStreams.TranscodingStream{…}, b::Vector{…}, nb::Int64)
    @ TranscodingStreams C:\Users\usr\.julia\packages\TranscodingStreams\O3BYF\src\stream.jl:401
  [8] _read_all_response_bytes(io::TranscodingStreams.TranscodingStream{…}, limit::Int64)
    @ HTTP C:\Users\usr\.julia\packages\HTTP\Iguyh\src\http_client.jl:1391
  [9] #_consume_incoming_response!##0
    @ C:\Users\usr\.julia\packages\HTTP\Iguyh\src\http_client.jl:1817 [inlined]
 [10] _with_response_reader(f::HTTP.var"#_consume_incoming_response!##0#_consume_incoming_response!##1"{…}, incoming::HTTP._IncomingResponse{…}, decompress::Nothing)
    @ HTTP C:\Users\usr\.julia\packages\HTTP\Iguyh\src\http_client.jl:1755
 [11] _consume_incoming_response!(incoming::HTTP._IncomingResponse{…}, sink::Nothing, decompress::Nothing, max_decompressed_size::Int64)
    @ HTTP C:\Users\usr\.julia\packages\HTTP\Iguyh\src\http_client.jl:1815
 [12] request(method::String, url::String, h::Vector{…}, b::String; headers::Vector{…}, body::String, basicauth::Nothing, retry::Bool, retries::Int64, retry_non_idempotent::Bool, retry_if::Nothing, respect_retry_after::Bool, retry_bucket::Bool, status_exception::Bool, redirect::Bool, redirect_limit::Nothing, redirect_method::Nothing, forwardheaders::Bool, proxy::HTTP._UseTransportProxy, cookies::Bool, cookiejar::Nothing, query::Nothing, response_stream::Nothing, decompress::Nothing, max_decompressed_size::Int64, sse_callback::Nothing, max_sse_line_bytes::Int64, max_sse_event_bytes::Int64, client::Nothing, context::Nothing, connect_timeout::Nothing, request_timeout::Int64, response_header_timeout::Int64, read_idle_timeout::Int64, write_idle_timeout::Int64, expect_continue_timeout::Nothing, readtimeout::Nothing, copyheaders::Bool, pool::Nothing, canonicalize_headers::Nothing, detect_content_type::Nothing, observelayers::Nothing, retry_delays::Nothing, retry_check::Nothing, sslconfig::Nothing, socket_type_tls::Nothing, logerrors::Nothing, logtag::Nothing, trace::Nothing, verbose::Nothing, require_ssl_verification::Bool, protocol::Symbol)
    @ HTTP C:\Users\usr\.julia\packages\HTTP\Iguyh\src\http_client.jl:2302
 [13] request
    @ C:\Users\usr\.julia\packages\HTTP\Iguyh\src\http_client.jl:2130 [inlined]
 [14] #post#155
    @ C:\Users\usr\.julia\packages\HTTP\Iguyh\src\http_client.jl:2551 [inlined]
 [15] post(::String, ::Vector{Pair{String, String}}, ::String)
    @ HTTP C:\Users\usr\.julia\packages\HTTP\Iguyh\src\http_client.jl:2549

I used fairly generic headers:

headers = [
    "Content-Type" => "application/json",
    "Accept" => "application/json",
    "username" => credentials.username,
    "password" => credentials.password,
]

Is there something I’m doing wrong here, or is it just that there are incompatibilities between HTTP.jl v2.x and the HTTP/1.1 protocol that Inmation uses? I can’t make heads or tails of this error message or why it’s appearing.