remmina-Message: 10:18:54.625: Remmina does not log all output statements. Turn on more verbose output by using "G_MESSAGES_DEBUG=remmina" as an environment variable.
More info available on the Remmina wiki at:
https://gitlab.com/Remmina/Remmina/-/wikis/Usage/Remmina-debugging
Python 2.7.18

(org.remmina.Remmina:16631): Gtk-WARNING **: 10:18:54.753: gtk_menu_attach_to_widget(): menu already attached to GtkMenuItem
[10:18:58:667] [16631:00004169] [ERROR][com.winpr.sspi.Kerberos] - [kerberos_AcquireCredentialsHandleA]: krb5_parse_name (Configuration file does not specify default realm [-1765328160])
[10:18:58:737] [16631:00004169] [ERROR][com.winpr.sspi.Kerberos] - [kerberos_AcquireCredentialsHandleA]: krb5_parse_name (Configuration file does not specify default realm [-1765328160])
[10:18:58:794] [16631:00004169] [INFO][com.freerdp.core.gateway.rdg] - [rdg_establish_data_connection]: RD Gateway does not support HTTP transport.
[10:18:59:955] [16631:00004169] [WARN][com.freerdp.core.gateway.tsg] - [tsg_ndr_pointer_read]: Read NDR pointer 0x20014 but expected 0x20010
[10:18:59:955] [16631:00004169] [ERROR][com.freerdp.core.gateway.tsg] - [tsg_ndr_read_string]: failed to read string, ActualCount (3834) * sizeof(WCHAR) > lengthInBytes (3834)
[10:18:59:955] [16631:00004169] [ERROR][com.freerdp.core.gateway.tsg] - [tsg_recv_pdu]: TsProxyCreateTunnelReadResponse failure
[10:18:59:955] [16631:00004169] [ERROR][com.freerdp.core.gateway.tsg] - [tsg_connect]: tsg_check failure
[10:18:59:955] [16631:00004169] [ERROR][com.freerdp.core.nego] - [nego_connect]: Failed to connect
[10:18:59:955] [16631:00004169] [ERROR][com.freerdp.core] - [rdp_client_connect]: ERRCONNECT_SECURITY_NEGO_CONNECT_FAILED [0x0002000C]
[10:18:59:955] [16631:00004169] [ERROR][com.freerdp.core.connection] - [rdp_client_connect]: Error: protocol security negotiation or connection failure