Broken in 3.4?

I constantly get this error when trying to use the gem; not sure what this is.

/Users/russ/.asdf/installs/ruby/3.3.4/lib/ruby/gems/3.3.0/gems/byebug-dap-0.1.4/lib/byebug/dap/session.rb:90: warning: undefining the allocator of T_DATA class Byebug::ThreadsTable
/Users/russ/.asdf/installs/ruby/3.3.4/lib/ruby/gems/3.3.0/gems/byebug-dap-0.1.4/lib/byebug/dap/session.rb:90: warning: undefining the allocator of T_DATA class Byebug::Context