# diagnose debug application csfd -1Output.
dia de en
<205> 04 nstd_send_pkt()-230This is because the root CA (which is the upstream link for the leaf), need to trust the leaf 'FG Fortinet_CA and Fortinet_Sub_Ca'.
<205> 08 nstd_send_pkt()-253: queuing packet to 34.3.143.156:8013 type:a7 len:15 queu len:1
<205> 04 __nstd_send()-166
<205> 08 __nstd_send()-214: Sending. IS SSL:0 packet type:167 len:15 sent:15 pos:15
<205> 08 __nstd_remove_w_buf()-70: fgt: 34.3.143.156:8013 write queue len after delete:0
<205> 04 nstd_upstream_ssl_connect()-902
<205> 02 nstd_upstream_ssl_connect()-922: err: WANT_READ
<205> 04 nstd_upstream_ssl_connect_hd()-847
<205> 04 nstd_upstream_ssl_connect()-902
<205> 04 nstd_upstream_ssl_connect_ok()-856
<205> 04 nstd_send_hello()-371
<205> 04 nstd_send_pkt()-230
<205> 08 nstd_send_pkt()-253: queuing packet to 34.3.143.156:8013 type:1 len:35 queu len:1
<205> 04 __nstd_send()-166
<205> 08 __nstd_send()-214: Sending. IS SSL:1 packet type:1 len:35 sent:35 pos:35
<205> 08 __nstd_remove_w_buf()-70: fgt: 34.3.143.156:8013 write queue len after delete:0
<205> 04 nstd_recv_hd()-647
<205> 04 __nstd_recv()-636
<205> 02 __ssl_recv()-595: SSL recv error, err:1 ret=0 ssl=error:00000001:lib(0):func(0):reason(1) socket=Success
<205> 02 __ssl_recv()-596: ssl error: error:14094418:SSL routines:ssl3_read_bytes:tlsv1 alert unknown ca
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