Unable to connect using the available authentication

Questions / Help
1

I’m using SftpEx to connect via SFTP with a remote server, the script works fine on my pc (Ubuntu 20.04) but at my Raspberry PI (Raspbian 10 buster) the following message appears:

SftpEx.connect(host: '<host>', user: '<user>', port: <port>)

Erlang SSH :client 4.8 (OpenSSL 1.1.1d 10 Sep 2019).
Server: 'SSH-2.0-OpenSSH_7.4'
Disconnects with code = 14 [RFC4253 11.1]: Unable to connect using the available authentication methods
State = {userauth, client}
Module = ssh_connection_handler, Line = 904
Details:
  User auth failed for: '<user>'

While searching the common awnser was the ssh key and pass_phrase.
But my key doesn’t have any pass_phrase and it’s named properly (~/.ssh/id_rsa). To verify the connection, I tested the command line ssh and sftp and both works just fine.

I would like to know if anyone can help me to fix this connection issue. Thank you

This is my first question at this forum so let me know if I broke any format rule.

2

How do you run the script?

3

Now testing, I’am running in interactive mode using iex -S mix.
The rest of the code works but the sftp connection fails, so to test I run the above command (SftpEx.connect…) at iex and produces the same error

4

How have you transfered that project to your raspberry? If you just copied the projects folder recursively, have you forced recompilation via rm -rfv _build deps; mix deps.get; mix compile, or are you using artifacts build on your Ubuntu?

How have you installed erlang and elixir on both systems?

5

It was with git clone from my rep in github. I’ll verify if any error occured.

At raspberry:
Erlang/OTP 22 [erts-10.5.4]
Elixir 1.10.3

At ubuntu:
Erlang/OTP 23 [erts-11.0.2]
Elixir 1.10.3

6

I used mix deps.get

7

Yes, but how did you install them?

8

From the commands given in elixir install page https://elixir-lang.org/install.html