UndefVarError: write_sub not defined. Cannot access internal Base API

[altre]

Elly tries to access the internal Base method Base.write_sub in rpc.jl:861

This leads to an UndefVarError in julia 1.7.2:

ERROR: UndefVarError: write_sub not defined
Stacktrace:
  [1] getproperty
    @ ./Base.jl:35 [inlined]
  [2] write(writer::Elly.HDFSBlockWriter, buff::Vector{UInt8})
    @ Elly ~/.julia/packages/Elly/Ia03N/src/rpc.jl:861
  [3] _write(writer::Elly.HDFSFileWriter, data::Vector{UInt8})
    @ Elly ~/.julia/packages/Elly/Ia03N/src/api_hdfs_io.jl:298
  [4] write
    @ ~/.julia/packages/Elly/Ia03N/src/api_hdfs_io.jl:309 [inlined]
  [5] cp(frompath::String, topath::Elly.HDFSFile; offset::UInt64, len::UInt64, crc::Bool)
    @ Elly ~/.julia/packages/Elly/Ia03N/src/api_hdfs_io.jl:385
  [6] cp
    @ ~/.julia/packages/Elly/Ia03N/src/api_hdfs_io.jl:365 [inlined]

It still works in julia 1.6

[schlurp]

Is there any progress happening on this issue? This prevents users from updating to a more recent julia version.