mod_muc_log_http crash

I configured everything according to the instructions. I installed mod_muc_log_http and enabled mod_muc_log. Messages are logged but when i try to view `server:5280/pub/muclogs` page, i see the error "connection broken". Crash log:

  crasher:
    initial call: ejabberd_http:init/2
    pid: <0.1952.0>
    registered_name: []
    exception error: bad argument: [{mod_muc_log_http,serve,2,[{file,"src/mod_muc_log_http.erl"},{line,46}]},{ejabberd_http,process,5,[{file,"src/ejabberd_http.erl"},{line,363}]},{ejabberd_http,process_request,1,[{file,"src/ejabberd_http.erl"},{line,451}]},{ejabberd_http,process_header,2,[{file,"src/ejabberd_http.erl"},{line,291}]},{ejabberd_http,parse_headers,1,[{file,"src/ejabberd_http.erl"},{line,211}]},{ejabberd_http,init,2,[{file,"src/ejabberd_http.erl"},{line,164}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,237}]}]
    ancestors: [<0.1904.0>,ejabberd_listeners,ejabberd_sup,<0.1499.0>]
    messages: []
    links: [#Port<0.65078>]
    dictionary: []
    trap_exit: false
    status: running
    heap_size: 1598
    stack_size: 27
    reductions: 1095
  neighbours:

The error may be what?