Unable to connnect to SQLServer dataserver parameter not Working

No source files or tests are named. Start with the SQL output plugin configuration and the TinyTDS connection error, then trace how its host and dataserver parameters are passed to the SQLServer adapter; done means establishing a documented, working connection without the reported configuration errors.

So I've been working with this plugin for some days and finally achieved sending logs to a local sqlserver container.
Now that Im trying in prepo I'm not able to connecto to the database.
And so I startted with

<match docker.caesar**>
    @type copy
    <store>
        @type stdout
    </store>
    <store>
        @type sql
        log_level info
        host 172........\sql2019pre
        port 1433
        chema_search_path piscinalogs
        database db_Poseidon
        adapter sqlserver
        username "#{ENV['USER']}"
        password "#{ENV['PASSWORD']}"
        state_file /var/run/fluentd/sql_state
        <table>
            table logs
column_mapping 'time:timestamp,level:level,mensaje:message,Container_Name:containerName,App_Name:appName,Env:enviroment'
            # This is the default table because it has no "pattern" argument in <table>
            # The logic is such that if all non-default <table> blocks
            # do not match, the default one is chosen.
            # The default table is required.
            flush_interval 10s
        </table>
    </store>
</match>

This configuration did not work since it returns
fluentd | 2024-08-29 09:42:24 +0000 [warn]: #0 failed to flush the buffer. retry_times=0 next_retry_time=2024-08-29 09:42:26 +0000 chunk="620cf46e28eacdbcecf964d3ed2978be" error_class=TinyTds::Error error="Server name not found in configuration files"
Then I investigated how activerecords connects to database and encounter that they used the param: dataserver
When removing the host param in order to introduce the dataserver param :

<match docker.caesar**>
    @type copy
    <store>
        @type stdout
    </store>
    <store>
        @type sql
        log_level info
        dataserver 172.......\sql2019pre
        port 1433
        chema_search_path piscinalogs
        database db_Poseidon
        adapter sqlserver
        username "#{ENV['USER']}"
        password "#{ENV['PASSWORD']}"
        state_file /var/run/fluentd/sql_state
        <table>
            table logs
column_mapping 'time:timestamp,level:level,mensaje:message,Container_Name:containerName,App_Name:appName,Env:enviroment'
            # This is the default table because it has no "pattern" argument in <table>
            # The logic is such that if all non-default <table> blocks
            # do not match, the default one is chosen.
            # The default table is required.
            flush_interval 10s
        </table>
    </store>
</match>

It returns:
fluentd | 2024-08-29 09:45:42 +0000 [error]: config error file="/fluentd/etc/fluent.conf" error_class=Fluent::ConfigError error="'host' parameter is required"
And so I decided to let both parameters

<match docker.caesar**>
    @type copy
    <store>
        @type stdout
    </store>
    <store>
        @type sql
        host  172......
        dataserver 172.......\sql2019pre
        port 1433
        chema_search_path piscinalogs
        database db_Poseidon
        adapter sqlserver
        username "#{ENV['USER']}"
        password "#{ENV['PASSWORD']}"
        state_file /var/run/fluentd/sql_state
        <table>
            table logs
column_mapping 'time:timestamp,level:level,mensaje:message,Container_Name:containerName,App_Name:appName,Env:enviroment'
            # This is the default table because it has no "pattern" argument in <table>
            # The logic is such that if all non-default <table> blocks
            # do not match, the default one is chosen.
            # The default table is required.
            flush_interval 10s
        </table>
    </store>
</match>

It returns: fluentd | 2024-08-29 09:48:34 +0000 [warn]: #0 failed to flush the buffer. retry_times=4 next_retry_time=2024-08-29 09:48:48 +0000 chunk="620cf5c1a09d87697d7c0f92760ef3fb" error_class=TinyTds::Error error="Unable to connect: Adaptive Server is unavailable or does not exist (172......)"
Im quite lost at this point