"could not determine if the source system was 32 or 64 bit;"

While trying to convert a CentOS Linux machine, I'm getting this error while querying the source spec.

[Converter Agent SysInfoQuery] could not determine if the source system was 32 or 64 bit; return code 1; result: Unable to open connection. Host doesn't exist.

It crashes here:

computerInfo = _converterServer._converterService.ConverterQuery(_converterServer._converterServerContent.queryManager,_liveSourceSpec);

Where the _liveSourceSpec is being built using the following. All parameters are correct and I have checked connectivity using SSH.

BuildLiveSourceLocation(String sourceName, String sourceUsername, String sourcePassword,String osType,String sslThumbprint)   
{

       ConverterComputerSpecLiveComputerLocation liveSourceLocation = newConverterComputerSpecLiveComputerLocation();

                liveSourceLocation.hostname = sourceName;

                liveSourceLocation.username = sourceUsername;
liveSourceLocation.osType = osType;
liveSourceLocation.verifyPeer = true;

liveSourceLocation.verifyPeerSpecified = true;
liveSourceLocation.sslThumbprint = sslThumbprint;

       if (osType.ToLower().Equals("linuxos"))       
{

      liveSourceLocation.port = 22;

           liveSourceLocation.portSpecified = true;       
}

return liveSourceLocation;

   
}