server failed to startup on windows 10

[stmkjp2]

Hi,

I installed latest Erlang (OTP20) and also latest lorawan server binary release (0.4.12) and tried to start the server by executing lorawan-server.bat but it failed miserably.

I searched all over the issues section on your github repo but I coulnd't find relevant.

I don't know what i'm doing wrong and what to do for resolve this issue.
could you help me out identifying the problem?

following is console message when I execute the batch file and I also attached crash dump file, FYI

`=CRASH REPORT==== 17-Oct-2017::15:46:38 ===
crasher:
initial call: lager_crash_log:init/1
pid: <0.110.0>
registered_name: []
exception error: no case clause matching {ok,log}
in function lager_util:expand_path/1 (/home/travis/build/gotthardp/lorawan-server/_build/default/lib/lager/src/lager_util.erl, line 503)
in call from lager_crash_log:init/1 (/home/travis/build/gotthardp/lorawan-server/_build/default/lib/lager/src/lager_crash_log.erl, line 74)
in call from gen_server:init_it/2 (gen_server.erl, line 365)
in call from gen_server:init_it/6 (gen_server.erl, line 333)
ancestors: [lager_sup,<0.106.0>]
message_queue_len: 0
messages: []
links: [<0.107.0>]
dictionary: []
trap_exit: false
status: running
heap_size: 987
stack_size: 27
reductions: 218
neighbours:

=SUPERVISOR REPORT==== 17-Oct-2017::15:46:38 ===
Supervisor: {local,lager_sup}
Context: start_error
Reason: {{case_clause,{ok,log}},
[{lager_util,expand_path,1,
[{file,
"/home/travis/build/gotthardp/lorawan-server/_build/default/lib/lager/src/lager_util.erl"},
{line,503}]},
{lager_crash_log,init,1,
[{file,
"/home/travis/build/gotthardp/lorawan-server/_build/default/lib/lager/src/lager_crash_log.erl"},
{line,74}]},
{gen_server,init_it,2,[{file,"gen_server.erl"},{line,365}]},
{gen_server,init_it,6,[{file,"gen_server.erl"},{line,333}]},
{proc_lib,init_p_do_apply,3,
[{file,"proc_lib.erl"},{line,247}]}]}
Offender: [{pid,undefined},
{id,lager_crash_log},
{mfargs,
{lager_crash_log,start_link,
["crash.log",65536,10485760,[{hour,0}],5]}},
{restart_type,permanent},
{shutdown,5000},
{child_type,worker}]

=CRASH REPORT==== 17-Oct-2017::15:46:38 ===
crasher:
initial call: application_master:init/4
pid: <0.105.0>
registered_name: []
exception exit: {bad_return,
{{lager_app,start,[normal,[]]},
{'EXIT',
{{badmatch,
{error,
{shutdown,
{failed_to_start_child,lager_crash_log,
{{case_clause,{ok,log}},
[{lager_util,expand_path,1,
[{file,
"/home/travis/build/gotthardp/lorawan-server/_build/default/lib/lager/src/lager_util.erl"},
{line,503}]},
{lager_crash_log,init,1,
[{file,
"/home/travis/build/gotthardp/lorawan-server/_build/default/lib/lager/src/lager_crash_log.erl"},
{line,74}]},
{gen_server,init_it,2,
[{file,"gen_server.erl"},{line,365}]},
{gen_server,init_it,6,
[{file,"gen_server.erl"},{line,333}]},
{proc_lib,init_p_do_apply,3,
[{file,"proc_lib.erl"},{line,247}]}]}}}}},
[{lager_app,start,2,
[{file,
"/home/travis/build/gotthardp/lorawan-server/_build/default/lib/lager/src/lager_app.erl"},
{line,219}]},
{application_master,start_it_old,4,
[{file,"application_master.erl"},{line,273}]}]}}}}
in function application_master:init/4 (application_master.erl, line 134)
ancestors: [<0.104.0>]
message_queue_len: 1
messages: [{'EXIT',<0.106.0>,normal}]
links: [<0.104.0>,<0.33.0>]
dictionary: []
trap_exit: true
status: running
heap_size: 1598
stack_size: 27
reductions: 252
neighbours:

=INFO REPORT==== 17-Oct-2017::15:46:38 ===
application: lager
exited: {bad_return,
{{lager_app,start,[normal,[]]},
{'EXIT',
{{badmatch,
{error,
{shutdown,
{failed_to_start_child,lager_crash_log,
{{case_clause,{ok,log}},
[{lager_util,expand_path,1,
[{file,
"/home/travis/build/gotthardp/lorawan-server/_build/default/lib/lager/src/lager_util.erl"},
{line,503}]},
{lager_crash_log,init,1,
[{file,
"/home/travis/build/gotthardp/lorawan-server/_build/default/lib/lager/src/lager_crash_log.erl"},
{line,74}]},
{gen_server,init_it,2,
[{file,"gen_server.erl"},{line,365}]},
{gen_server,init_it,6,
[{file,"gen_server.erl"},{line,333}]},
{proc_lib,init_p_do_apply,3,
[{file,"proc_lib.erl"},{line,247}]}]}}}}},
[{lager_app,start,2,
[{file,
"/home/travis/build/gotthardp/lorawan-server/_build/default/lib/lager/src/lager_app.erl"},
{line,219}]},
{application_master,start_it_old,4,
[{file,"application_master.erl"},{line,273}]}]}}}}
type: temporary

=INFO REPORT==== 17-Oct-2017::15:46:38 ===
application: goldrush
exited: stopped
type: temporary

=INFO REPORT==== 17-Oct-2017::15:46:38 ===
application: compiler
exited: stopped
type: temporary

=INFO REPORT==== 17-Oct-2017::15:46:38 ===
application: syntax_tools
exited: stopped
type: temporary

=INFO REPORT==== 17-Oct-2017::15:46:38 ===
application: mnesia
exited: stopped
type: temporary

=INFO REPORT==== 17-Oct-2017::15:46:38 ===
application: os_mon
exited: stopped
type: temporary

=INFO REPORT==== 17-Oct-2017::15:46:38 ===
application: sasl
exited: stopped
type: temporary
{
=ERROR REPORT==== 17-Oct-2017::15:46:38 ===
Error in process <0.5.0> on node 'lorawan@DESKTOP-0KG51QO' with exit value:
{{badmatch,
{error,
{lager,
{bad_return,
{{lager_app,start,[normal,[]]},
{'EXIT',
{{badmatch,
{error,
{shutdown,
{failed_to_start_child,lager_crash_log,
{{case_clause,{ok,log}},
[{lager_util,expand_path,1,
[{file,
"/home/travis/build/gotthardp/lorawan-server/_build/default/lib/lager/src/lager_util.erl"},
{line,503}]},
{lager_crash_log,init,1,
[{file,
"/home/travis/build/gotthardp/lorawan-server/build/default/lib/lager/src/lager_crash_log.erl"},
{line,74}]},
{gen_server,init_it,2,[{file,"gen_server.erl"},{line,365}]},
{gen_server,init_it,6,[{file,"gen_server.erl"},{line,333}]},
{proc_lib,init_p_do_apply,3,
[{file,"proc_lib.erl"},{line,247}]}]}}}}},
[{lager_app,start,2,
[{file,
"/home/travis/build/gotthardp/lorawan-server/build/default/lib/lager/src/lager_app.erl"},
{line,219}]},
{application_master,start_it_old,4,
[{file,"application_master.erl"},{line,273}]}]}}}}}}},
[{lorawan_app,start,0,
[{file,
"/home/travis/build/gotthardp/lorawan-server/build/default/lib/lorawan_server/src/lorawan_app.erl"},
{line,16}]},
{init,start_em,1,[{file,"init.erl"},{line,1085}]},
{init,do_boot,3,[{file,"init.erl"},{line,793}]}]}
"init terminating in do_boot",{{badmatch,{error,{lager,{bad_return,{{lager_app,start,[normal,[]]},{'EXIT',{{badmatch,{error,{shutdown,{failed_to_start_child,lager_crash_log,{{case_clause,{ok,log}},[{lager_util,expand_path,1,[{file,"/home/travis/build/gotthardp/lorawan-server/build/default/lib/lager/src/lager_util.erl"},{line,503}]},{lager_crash_log,init,1,[{file,"/home/travis/build/gotthardp/lorawan-server/build/default/lib/lager/src/lager_crash_log.erl"},{line,74}]},{gen_server,init_it,2,[{file,"gen_server.erl"},{line,365}]},{gen_server,init_it,6,[{file,"gen_server.erl"},{line,333}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,247}]}]}}}}},[{lager_app,start,2,[{file,"/home/travis/build/gotthardp/lorawan-server/build/default/lib/lager/src/lager_app.erl"},{line,219}]},{application_master,start_it_old,4,[{file,"application_master.erl"},{line,273}]}]}}}}}}},[{lorawan_app,start,0,[{file,"/home/travis/build/gotthardp/lorawan-server/build/default/lib/lorawan_server/src/lorawan_app.erl"},{line,16}]},{init,start_em,1,[{file,"init.erl"},{line,1085}]},{init,do_boot,3,[{file,"init.erl"},{line,793}]}]}}
init terminating in do_boot ({{badmatch,{error,{lager,{}}}},[{lorawan_app,start,0,[{},{}]},{init,start_em,1,[{},{}]},{init,do_boot,3,[{},{}]}]})

Crash dump is being written to: erl_crash.dump...done`

erl_crash.dump.txt

[altishchenko]

By the output, it looks like there is a problem in lorawan-server.bat: set "ERL_ARGS=-lager log_root "log"" Somehow it gets passed into erlang as log_root=log instead of log_root="log" (missing quotes). Unfortunately, I don't have a windows machine handy to check the proper way of doing things right, but until Petr has time, you may kick start the server by deleting this line and removing %ERLARGS% from the last line of the .bat file. Regards, Alex

[gotthardp]

That seems to be the reason.

Could you please edit your lorawan-server.bat and change

set "ERL_ARGS=-lager log_root "log""

to

set ERL_ARGS="-lager log_root "log""

Note just one quotation mark moved. It's a very minor change.

[stmkjp2]

@altishchenko @gotthardp , it works like a charm now!

Thank you for your helps and thank you for the great server app!!

Best,
JP

[gotthardp]

Cool. I just did commit the fix.