Thanks, I did
rp(process_Info(<0.3238.0>, backtrace)).
and got this:
{backtrace,<<"Program counter: 0x00007f3542681490 (gen:do_call/4 + 280)\n"
"y(0) []\n"
"y(1) infinity\n"
"y(2) []\n"
"y(3) #Ref<0.3234177338.3271557122.27248>\n"
"y(4) <0.21289.50>\n"
"\n"
"0x00007f34ab0c1630 Return addr 0x00007f34c72fb808 (gen_statem:call_dirty/4 + 104)\n"
"y(0) infinity\n"
"y(1) {start,infinity}\n"
"y(2) <0.21289.50>\n"
"y(3) Catch 0x00007f34c72fb840 (gen_statem:call_dirty/4 + 160)\n"
"\n"
"0x00007f34ab0c1658 Return addr 0x00007f3542a7e1c8 (ssl_gen_statem:call/2 + 72)\n"
"y(0) Catch 0x00007f3542a7e1d8 (ssl_gen_statem:call/2 + 88)\n"
"\n"
"0x00007f34ab0c1668 Return addr 0x00007f3542a751d0 (ssl_gen_statem:handshake/2 + 152)\n"
"y(0) []\n"
"y(1) {sslsocket,{gen_tcp,#Port<0.5296215>,tls_connection,undefined},[<0.21289.50>,<0.22818.50>]}\n"
"\n"
"0x00007f34ab0c1680 Return addr 0x00007f3542a94790 (tls_gen_connection:start_fsm/8 + 1240)\n"
"y(0) []\n"
"y(1) []\n"
"y(2) []\n"
"y(3) []\n"
"y(4) []\n"
"y(5) []\n"
"y(6) []\n"
"y(7) []\n"
"y(8) []\n"
"y(9) []\n"
"y(10) Catch 0x00007f3542a947a0 (tls_gen_connection:start_fsm/8 + 1256)\n"
"\n"
"0x00007f34ab0c16e0 Return addr 0x00007f3542a74fc8 (ssl_gen_statem:connect/8 + 104)\n"
"y(0) Catch 0x00007f3542a74fd8 (ssl_gen_statem:connect/8 + 120)\n"
"\n"
"0x00007f34ab0c16f0 Return addr 0x00007f34c5189890 (gun:normal_tls_handshake/4 + 384)\n"
"y(0) []\n"
"y(1) gun_default_event_h\n"
"y(2) []\n"
"y(3) [http2,http]\n"
"y(4) #{socket=>#Port<0.5296215>,timeout=>infinity,tls_opts=>[{alpn_advertised_protocols,[<<\"http/1.1\">>,<<\"h2\">>]},{client_preferred_next_protocols,{client,[<<\"http/1.1\">>,<<\"h2\">>],<<\"http/1.1\">>}},{server_name_indication,\"management.me\"},{alpn_advertised_protocols,[<<\"http/1.1\">>,<<\"h2\">>]},{client_preferred_next_protocols,{client,[<<\"http/1.1\">>,<<\"h2\">>],<<\"http/1.1\">>}}]}\n"
"y(5) {state,<0.3237.0>,{up,#Ref<0.3234177338.2967732226.142611>},\"management.me\",443,<<\"https\">>,\"management.me\",443,[],#{connect_timeout=>3000,http_opts=>#{keepalive=>5000},retry=>3,retry_timeout=>1000},undefined,undefined,gun_tls,true,{ssl,ssl_closed,ssl_error},undefined,undefined,undefined,gun_default_event_h,undefined}\n"
"y(6) undefined\n"
"\n"
"0x00007f34ab0c1730 Return addr 0x00007f34c5188518 (gun:initial_tls_handshake/3 + 416)\n"
"y(0) []\n"
"y(1) []\n"
"y(2) 2\n"
"y(3) []\n"
"y(4) []\n"
"\n"
"0x00007f34ab0c1760 Return addr 0x00007f34c72fea10 (gen_statem:loop_state_callback/11 + 872)\n"
"y(0) []\n"
"y(1) []\n"
"y(2) true\n"
"y(3) false\n"
"y(4) []\n"
"y(5) false\n"
"y(6) []\n"
"y(7) {initial_tls_handshake,{state,<0.3237.0>,{up,#Ref<0.3234177338.2967732226.142611>},\"management.me\",443,<<\"https\">>,\"management.me\",443,[],#{connect_timeout=>3000,http_opts=>#{keepalive=>5000},retry=>3,retry_timeout=>1000},undefined,undefined,gun_tls,true,{ssl,ssl_closed,ssl_error},undefined,undefined,undefined,gun_default_event_h,undefined}}\n"
"y(8) [{internal,{retries,2,#Port<0.5296215>}}]\n"
"y(9) {state,{initial_tls_handshake,{state,<0.3237.0>,{up,#Ref<0.3234177338.2967732226.142611>},\"management.me\",443,<<\"https\">>,\"management.me\",443,[],#{connect_timeout=>3000,http_opts=>#{keepalive=>5000},retry=>3,retry_timeout=>1000},undefined,undefined,gun_tls,true,{ssl,ssl_closed,ssl_error},undefined,undefined,undefined,gun_default_event_h,undefined}},[],#{},false}\n"
"y(10) []\n"
"y(11) {params,state_functions,false,<0.1197.0>,[gun],<0.3238.0>,infinity}\n"
"y(12) Catch 0x00007f34c72fea80 (gen_statem:loop_state_callback/11 + 984)\n"
"\n"
"0x00007f34ab0c17d0 Return addr 0x00007f34c7c83c00 (proc_lib:init_p/5 + 264)\n"
"y(0) []\n"
"y(1) []\n"
"y(2) []\n"
"y(3) Catch 0x00007f34c7c83c10 (proc_lib:init_p/5 + 280)\n"
"\n"
"0x00007f34ab0c17f8 Return addr 0x000000000092aa38 (<terminate process normally>)\n"
"">>}