Authentication attempt failed

[A11oW]

When I try StrongLoop Arc sign in http://localhost:50949/api/Subscriptions/login?include=user return 500

{"error":{"name":"Error","status":500,"message":"write EPROTO 140735284158464:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:../deps/openssl/openssl/ssl/s23_clnt.c:794:\n","code":"EPROTO","errno":"EPROTO","syscall":"write","stack":"Error: write EPROTO 140735284158464:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:../deps/openssl/openssl/ssl/s23_clnt.c:794:\n\n    at exports._errnoException (util.js:856:11)\n    at WriteWrap.afterWrite (net.js:763:14)"}}

[A11oW]

That happens if common/models move in server/ folder, like this server/models. Where I can configurate that?
server/model-config.json does not affect for slc arc?