Thanks for that Nick. I already had that as I was getting the error. I changes the position of boss_form in rebar.config and now I have a different issue:
09:44:49.807 [error] Unhandled Error: error:function_clause Stacktrace: [{boss_web_controller_handle_request,process_result,[{boss_app_info,
asm_dashboard,[],
"/static","/doc",all,
[{asm_dashboard_01_news,
[0]}],
<0.295.0>,<0.296.0>,
<0.298.0>,<0.299.0>,
["asm","greeting"],
[],
["asm_dashboard_asm_controller",
"asm_dashboard_dispatch_controller",
"asm_dashboard_greeting_controller"]},
{sbw,cowboy_simple_bridge,
{cowboy_bridge,
false,[],[],[],none,
[{<<"host">>,
{<<"connection">>,
<<"keep-alive">>},
{<<"cache-control">>,
<<"max-age=0">>},
{<<"user-agent">>,
<<"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36">>},
{<<"upgrade-insecure-requests">>,
<<"1">>},
{<<"accept">>,
<<"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8">>},
{<<"accept-encoding">>,
<<"gzip, deflate, br">>},
{<<"accept-language">>,
<<"en-US,en;q=0.9">>},
{<<"cookie">>,
<<"_ga=GA1.1.954076321.1512824233; __zlcmid=jtgxPXLkmmbTy0; csrftoken=QcRQOtrXSldsDpCURTVHygYbLhItucLn; sessionid=rpwb5m5j7dlttzrjosx8t3jimmv3qoy6; _boss_session=d1718a457590314fc6bd530c6cdeb9fd62d784c5">>}],
[{<<"_ga">>,
<<"GA1.1.954076321.1512824233">>},
{<<"__zlcmid">>,
<<"jtgxPXLkmmbTy0">>},
{<<"csrftoken">>,
<<"QcRQOtrXSldsDpCURTVHygYbLhItucLn">>},
{<<"sessionid">>,
<<"rpwb5m5j7dlttzrjosx8t3jimmv3qoy6">>},
{<<"_boss_session">>,
<<"d1718a457590314fc6bd530c6cdeb9fd62d784c5">>}],
{response,200,[],[],[]}},
{{ok,
[{a,b},
{form,
{login_form,[],[...