"The connection was reset" unable to create posts after successfully deployed on heroku

I have successfully deployed my app on heroku.com, after creating user account in my site on heroku machine, I tried to create "event", it is taking too much time and gets this error "The connection was reset" on my firefox browser. BUT I can create the "event" in my local machine without any error, I tried to find the clue of the error in heroku logs, but, the logs seems very fare, no errors i found, can you please help me..!! Thanks.!!

My environment details are:- OS: Ubuntu 14.04 Ruby: 1.9.3 Rails: 3.2.21 database: Postgresql browser: firefox 38. Please let me know if you need some more information.

THIS IS MY HEROKU LOG FILE

2015-06-08T18:31:26.600578+00:00 app[web.1]: Rendered layouts/_messages.html.erb (0.1ms) 2015-06-08T18:31:26.590370+00:00 app[web.1]: Rendered shared/_eve.html.erb (0.0ms) 2015-06-08T18:31:26.600377+00:00 app[web.1]: Rendered layouts/_header.html.erb (4.2ms) 2015-06-08T18:31:26.560784+00:00 app[web.1]: Processing by StaticPagesController#Home as HTML 2015-06-08T18:31:26.590961+00:00 app[web.1]: Rendered shared/_mevents.html.erb (0.0ms) 2015-06-08T18:31:26.601010+00:00 app[web.1]: Rendered layouts/_footer.html.erb (0.3ms) 2015-06-08T18:31:28.324383+00:00 heroku[router]: at=info method=GET path="/assets/backuplogo-4e043f66cb64e220e2693e2816e27a40.jpg" host=www.f1f5.net request_id=dfc899cf-04e1-4423-9686-ce0455b4cd8e fwd="106.220.244.146" dyno=web.1 connect=0ms service=14ms status=200 bytes=22583 2015-06-08T18:31:28.358391+00:00 heroku[router]: at=info method=GET path="/assets/events-a9e436c440fcc4893cf9541bcc2bc5bd.png" host=www.f1f5.net request_id=bbed7a82-d33a-4af1-a5d6-3204c9fef9fe fwd="106.220.244.146" dyno=web.1 connect=1ms service=8ms status=200 bytes=3259 2015-06-08T18:31:30.401522+00:00 app[web.1]: Started GET "/postevents" for 106.220.244.146 at 2015-06-08 18:31:30 +0000 2015-06-08T18:31:30.425530+00:00 app[web.1]: Rendered layouts/_shim.html.erb (0.0ms) 2015-06-08T18:31:30.424238+00:00 app[web.1]: Rendered events/_form.html.erb (13.1ms) 2015-06-08T18:31:30.427590+00:00 app[web.1]: Rendered layouts/_messages.html.erb (0.1ms) 2015-06-08T18:31:30.428241+00:00 app[web.1]: Completed 200 OK in 21.6ms (Views: 18.8ms | ActiveRecord: 1.6ms) 2015-06-08T18:31:30.424364+00:00 app[web.1]: Rendered postevents/index.html.erb within layouts/application (16.1ms) 2015-06-08T18:31:30.428041+00:00 app[web.1]: Rendered layouts/_footer.html.erb (0.3ms) 2015-06-08T18:31:30.406598+00:00 app[web.1]: Processing by PosteventsController#index as HTML 2015-06-08T18:31:30.427383+00:00 app[web.1]: Rendered layouts/_header.html.erb (1.7ms) 2015-06-08T18:31:27.496708+00:00 heroku[router]: at=info method=GET path="/assets/application-0896a7581f1a608800e8222718be605b.js" host=www.f1f5.net request_id=f13ea3b4-f941-4844-a498-5510f5efda13 fwd="106.220.244.146" dyno=web.1 connect=2ms service=20ms status=304 bytes=177 2015-06-08T18:31:27.978818+00:00 heroku[router]: at=info method=GET path="/assets/linuxlogo-c3e5602757fde9e423253e7b1890c40c.jpg" host=www.f1f5.net request_id=c47a8e72-3307-4e9d-b200-80a5f6be481f fwd="106.220.244.146" dyno=web.1 connect=0ms service=9ms status=200 bytes=10210 2015-06-08T18:31:28.703568+00:00 heroku[router]: at=info method=GET path="/assets/compose-fb0d43285b91217162f5d5ea72b57af7.jpg" host=www.f1f5.net request_id=091b77e1-4cc6-4e8c-b3d4-6f7cd4572326 fwd="106.220.244.146" dyno=web.1 connect=1ms service=6ms status=200 bytes=2330 2015-06-08T18:31:28.387017+00:00 heroku[router]: at=info method=GET path="/assets/no-image-icon-a1fb0a86d4505761fddcb49f8eab8f2c.jpg" host=www.f1f5.net request_id=16ca8d80-eea2-45d1-a2e1-25eee1bc7390 fwd="106.220.244.146" dyno=web.1 connect=0ms service=10ms status=200 bytes=10952 2015-06-08T18:31:27.139643+00:00 heroku[router]: at=info method=GET path="/assets/application-db46f7c86a586d9a4d9443846f8d532f.css" host=www.f1f5.net request_id=256305b3-e944-4f9c-a1b9-adadd5b03edb fwd="106.220.244.146" dyno=web.1 connect=1ms service=9ms status=304 bytes=177 2015-06-08T18:31:27.961959+00:00 heroku[router]: at=info method=GET path="/assets/winlogo-5e4f926601f15059a351cc67274797fd.jpg" host=www.f1f5.net request_id=dba5c309-46ba-4b5f-be2d-8d49e7417581 fwd="106.220.244.146" dyno=web.1 connect=1ms service=5ms status=200 bytes=2894 2015-06-08T18:31:28.440661+00:00 heroku[router]: at=info method=GET path="/assets/uprofile-e642da6f390ec8f12dab904bdc4a96bf.png" host=www.f1f5.net request_id=03df1380-4300-45f0-ad79-1b3705a09efd fwd="106.220.244.146" dyno=web.1 connect=0ms service=16ms status=200 bytes=4868 2015-06-08T18:31:30.431619+00:00 heroku[router]: at=info method=GET path="/postevents" host=www.f1f5.net request_id=2bef36b8-d6b8-40c3-9c34-b4ef16130219 fwd="106.220.244.146" dyno=web.1 connect=1ms service=120ms status=200 bytes=11664 2015-06-08T18:31:31.586925+00:00 heroku[router]: at=info method=GET path="/assets/fontawesome-webfont-c3505b2ba2be317c06bb81329741ee60.woff?v=4.2.0" host=www.f1f5.net request_id=0be23c23-66e4-45c1-951b-06cd054c916f fwd="106.220.244.146" dyno=web.1 connect=0ms service=10ms status=200 bytes=65725 2015-06-08T18:37:36.527610+00:00 app[web.1]: Processing by StaticPagesController#Home as HTML 2015-06-08T18:37:36.524506+00:00 app[web.1]: Started GET "/" for 106.220.244.146 at 2015-06-08 18:37:36 +0000 2015-06-08T18:37:36.871558+00:00 heroku[router]: at=info method=GET path="/" host=www.f1f5.net request_id=dbe9d072-3c5e-43b4-9860-343a2ed76b9e fwd="106.220.244.146" dyno=web.1 connect=1ms service=354ms status=200 bytes=7019 2015-06-08T18:37:36.869660+00:00 app[web.1]: Rendered static_pages/Home.html.erb within layouts/application (9.0ms) 2015-06-08T18:37:36.871908+00:00 app[web.1]: Rendered layouts/_header.html.erb (1.1ms) 2015-06-08T18:37:36.872922+00:00 app[web.1]: Rendered layouts/_footer.html.erb (0.7ms) 2015-06-08T18:37:36.868174+00:00 app[web.1]: Rendered shared/_vtext.html.erb (0.0ms) 2015-06-08T18:37:36.870666+00:00 app[web.1]: Rendered layouts/_shim.html.erb (0.0ms) 2015-06-08T18:37:36.872091+00:00 app[web.1]: Rendered layouts/_messages.html.erb (0.1ms) 2015-06-08T18:37:36.873091+00:00 app[web.1]: Completed 200 OK in 345.4ms (Views: 12.9ms | ActiveRecord: 331.1ms) 2015-06-08T18:37:37.646797+00:00 heroku[router]: at=info method=GET path="/assets/Background.jpg" host=www.f1f5.net request_id=bde06c9f-117c-4456-bfd2-f891167439ce fwd="106.220.244.146" dyno=web.1 connect=1ms service=22ms status=200 bytes=319461 2015-06-08T18:37:52.275247+00:00 heroku[router]: at=info method=POST path="/sessions" host=www.f1f5.net request_id=dcda1757-968b-41c6-a358-868caa1991d6 fwd="106.220.244.146" dyno=web.1 connect=2ms service=190ms status=302 bytes=622 2015-06-08T18:37:52.102062+00:00 app[web.1]: Started POST "/sessions" for 106.220.244.146 at 2015-06-08 18:37:52 +0000 2015-06-08T18:37:52.116545+00:00 app[web.1]: Parameters: {"utf8"=>"✓", "authenticity_token"=>"ApbaaeazuOwUydYJ3B1doDQNXieA1yNDkymDgrVmJw8=", "session"=>{"email"=>"rasool.sb@gmail.com", "password"=>"[FILTERED]"}, "commit"=>"Sign in"} 2015-06-08T18:37:52.112841+00:00 app[web.1]: Processing by SessionsController#create as HTML 2015-06-08T18:37:52.275723+00:00 app[web.1]: Redirected to http://www.f1f5.net/ 2015-06-08T18:37:52.275836+00:00 app[web.1]: Completed 302 Found in 159.2ms (ActiveRecord: 3.5ms) 2015-06-08T18:37:52.824438+00:00 app[web.1]: Started GET "/" for 106.220.244.146 at 2015-06-08 18:37:52 +0000 2015-06-08T18:37:52.846650+00:00 app[web.1]: Rendered shared/_links.html.erb (5.1ms) 2015-06-08T18:37:52.853473+00:00 app[web.1]: Rendered shared/_user_info.html.erb (1.0ms) 2015-06-08T18:37:52.849884+00:00 app[web.1]: Rendered shared/_events.html.erb (3.0ms) 2015-06-08T18:37:52.853552+00:00 app[web.1]: Rendered static_pages/Home.html.erb within layouts/application (12.3ms) 2015-06-08T18:37:52.854649+00:00 app[web.1]: Rendered layouts/_shim.html.erb (0.0ms) 2015-06-08T18:37:52.856782+00:00 app[web.1]: Rendered layouts/_messages.html.erb (0.1ms) 2015-06-08T18:37:52.857434+00:00 app[web.1]: Completed 200 OK in 30.1ms (Views: 14.2ms | ActiveRecord: 6.0ms) 2015-06-08T18:37:52.827212+00:00 app[web.1]: Processing by StaticPagesController#Home as HTML 2015-06-08T18:37:52.849539+00:00 app[web.1]: Rendered shared/_eve.html.erb (0.0ms) 2015-06-08T18:37:52.850075+00:00 app[web.1]: Rendered shared/_mevents.html.erb (0.0ms) 2015-06-08T18:37:52.856596+00:00 app[web.1]: Rendered layouts/_header.html.erb (1.8ms) 2015-06-08T18:37:52.857199+00:00 app[web.1]: Rendered layouts/_footer.html.erb (0.3ms) 2015-06-08T18:37:52.856724+00:00 heroku[router]: at=info method=GET path="/" host=www.f1f5.net request_id=0f4ace2f-dc27-4f52-b0cb-b71ec7f485cd fwd="106.220.244.146" dyno=web.1 connect=2ms service=39ms status=200 bytes=7059 2015-06-08T18:37:56.509326+00:00 heroku[router]: at=info method=GET path="/postevents" host=www.f1f5.net request_id=423bb221-312a-45d9-ac83-4c74a0b1937a fwd="106.220.244.146" dyno=web.1 connect=1ms service=30ms status=200 bytes=11664 2015-06-08T18:37:56.506510+00:00 app[web.1]: Rendered postevents/index.html.erb within layouts/application (14.6ms) 2015-06-08T18:37:56.506432+00:00 app[web.1]: Rendered events/_form.html.erb (11.1ms) 2015-06-08T18:37:56.507575+00:00 app[web.1]: Rendered layouts/_shim.html.erb (0.0ms) 2015-06-08T18:37:56.486961+00:00 app[web.1]: Started GET "/postevents" for 106.220.244.146 at 2015-06-08 18:37:56 +0000 2015-06-08T18:37:56.509629+00:00 app[web.1]: Rendered layouts/_messages.html.erb (0.1ms) 2015-06-08T18:37:56.510226+00:00 app[web.1]: Completed 200 OK in 19.8ms (Views: 17.2ms | ActiveRecord: 1.5ms) 2015-06-08T18:37:56.490378+00:00 app[web.1]: Processing by PosteventsController#index as HTML 2015-06-08T18:37:56.510034+00:00 app[web.1]: Rendered layouts/_footer.html.erb (0.3ms) 2015-06-08T18:37:56.509294+00:00 app[web.1]: Rendered layouts/_header.html.erb (1.6ms) 2015-06-08T18:37:57.531912+00:00 heroku[router]: at=info method=GET path="/assets/fontawesome-webfont-c3505b2ba2be317c06bb81329741ee60.woff?v=4.2.0" host=www.f1f5.net request_id=fb65ba25-1b1d-4e0e-a9ed-7d7e638c0b4a fwd="106.220.244.146" dyno=web.1 connect=2ms service=11ms status=200 bytes=65725 2015-06-08T18:50:05.754245+00:00 app[web.1]: Rendered shared/_links.html.erb (4.8ms) 2015-06-08T18:50:05.758251+00:00 app[web.1]: Rendered shared/_events.html.erb (3.7ms) 2015-06-08T18:50:05.761845+00:00 app[web.1]: Rendered shared/_user_info.html.erb (1.1ms) 2015-06-08T18:50:05.736932+00:00 app[web.1]: Started GET "/" for 106.220.244.146 at 2015-06-08 18:50:05 +0000 2015-06-08T18:50:05.761921+00:00 app[web.1]: Rendered static_pages/Home.html.erb within layouts/application (12.8ms) 2015-06-08T18:50:05.766200+00:00 app[web.1]: Completed 200 OK in 25.9ms (Views: 15.0ms | ActiveRecord: 6.7ms) 2015-06-08T18:50:05.763414+00:00 app[web.1]: Rendered layouts/_shim.html.erb (0.0ms) 2015-06-08T18:50:05.740197+00:00 app[web.1]: Processing by StaticPagesController#Home as HTML 2015-06-08T18:50:05.757803+00:00 app[web.1]: Rendered shared/_eve.html.erb (0.0ms) 2015-06-08T18:50:05.758408+00:00 app[web.1]: Rendered shared/_mevents.html.erb (0.0ms) 2015-06-08T18:50:05.765332+00:00 app[web.1]: Rendered layouts/_header.html.erb (1.8ms) 2015-06-08T18:50:05.765512+00:00 app[web.1]: Rendered layouts/_messages.html.erb (0.1ms) 2015-06-08T18:50:05.765989+00:00 app[web.1]: Rendered layouts/_footer.html.erb (0.3ms) 2015-06-08T18:50:06.650707+00:00 heroku[router]: at=info method=GET path="/assets/application-0896a7581f1a608800e8222718be605b.js" host=f1tof5.herokuapp.com request_id=ae22e49f-a41c-42b7-b7f8-7a7d7a615b88 fwd="106.220.244.146" dyno=web.1 connect=1ms service=17ms status=304 bytes=177 2015-06-08T18:50:07.198221+00:00 heroku[router]: at=info method=GET path="/assets/linuxlogo-c3e5602757fde9e423253e7b1890c40c.jpg" host=f1tof5.herokuapp.com request_id=6a3cef3f-fa47-4604-a2ff-a603bb16407d fwd="106.220.244.146" dyno=web.1 connect=1ms service=4ms status=304 bytes=177 2015-06-08T18:50:07.659381+00:00 heroku[router]: at=info method=GET path="/assets/no-image-icon-a1fb0a86d4505761fddcb49f8eab8f2c.jpg" host=f1tof5.herokuapp.com request_id=b17cb5fc-0277-4794-bd03-b53c335f4e23 fwd="106.220.244.146" dyno=web.1 connect=1ms service=67ms status=304 bytes=177 2015-06-08T18:50:07.662104+00:00 heroku[router]: at=info method=GET path="/assets/compose-fb0d43285b91217162f5d5ea72b57af7.jpg" host=f1tof5.herokuapp.com request_id=0acc87fd-1792-4ffd-ad6f-1be088d700c5 fwd="106.220.244.146" dyno=web.1 connect=1ms service=47ms status=304 bytes=177 2015-06-08T18:50:07.650668+00:00 heroku[router]: at=info method=GET path="/assets/events-a9e436c440fcc4893cf9541bcc2bc5bd.png" host=f1tof5.herokuapp.com request_id=cd2c1cdb-a93d-4220-a54f-7918eaad63ba fwd="106.220.244.146" dyno=web.1 connect=2ms service=40ms status=304 bytes=177 2015-06-08T18:50:11.741395+00:00 app[web.1]: Started GET "/postevents" for 106.220.244.146 at 2015-06-08 18:50:11 +0000 2015-06-08T18:50:11.792825+00:00 app[web.1]: Rendered events/_form.html.erb (38.8ms) 2015-06-08T18:50:11.796263+00:00 app[web.1]: Rendered layouts/_shim.html.erb (0.1ms) 2015-06-08T18:50:11.800989+00:00 app[web.1]: Rendered layouts/_messages.html.erb (0.1ms) 2015-06-08T18:50:11.803277+00:00 app[web.1]: Completed 200 OK in 56.1ms (Views: 53.4ms | ActiveRecord: 1.5ms) 2015-06-08T18:50:11.745199+00:00 app[web.1]: Processing by PosteventsController#index as HTML 2015-06-08T18:50:11.793958+00:00 app[web.1]: Rendered postevents/index.html.erb within layouts/application (45.1ms) 2015-06-08T18:50:11.800473+00:00 app[web.1]: Rendered layouts/_header.html.erb (3.6ms) 2015-06-08T18:50:11.802119+00:00 app[web.1]: Rendered layouts/_footer.html.erb (0.7ms) 2015-06-08T18:50:07.654335+00:00 heroku[router]: at=info method=GET path="/assets/datalogo-a4f5dcee75f68625315f33571e6835b8.jpg" host=f1tof5.herokuapp.com request_id=2b082e72-04fe-4902-b0cf-0c74867d4ae1 fwd="106.220.244.146" dyno=web.1 connect=0ms service=70ms status=304 bytes=177 2015-06-08T18:50:05.770144+00:00 heroku[router]: at=info method=GET path="/" host=f1tof5.herokuapp.com request_id=a86d465c-7b64-42f2-b721-b4984c0e56b1 fwd="106.220.244.146" dyno=web.1 connect=1ms service=37ms status=200 bytes=7107 2015-06-08T18:50:06.291642+00:00 heroku[router]: at=info method=GET path="/assets/application-db46f7c86a586d9a4d9443846f8d532f.css" host=f1tof5.herokuapp.com request_id=4d45f74f-ec33-43de-84f6-f1e27846aefe fwd="106.220.244.146" dyno=web.1 connect=1ms service=10ms status=304 bytes=177 2015-06-08T18:50:07.189903+00:00 heroku[router]: at=info method=GET path="/assets/winlogo-5e4f926601f15059a351cc67274797fd.jpg" host=f1tof5.herokuapp.com request_id=7b6a2417-dc31-4180-8ac0-0699cf3bfbff fwd="106.220.244.146" dyno=web.1 connect=0ms service=5ms status=304 bytes=177 2015-06-08T18:50:07.651008+00:00 heroku[router]: at=info method=GET path="/assets/uprofile-e642da6f390ec8f12dab904bdc4a96bf.png" host=f1tof5.herokuapp.com request_id=33e2e8f7-93e0-4821-8599-f06359ae7cef fwd="106.220.244.146" dyno=web.1 connect=1ms service=50ms status=304 bytes=177 2015-06-08T18:50:11.808303+00:00 heroku[router]: at=info method=GET path="/postevents" host=f1tof5.herokuapp.com request_id=43fcbdb1-2c5c-4cf1-ab65-22c74ca44d83 fwd="106.220.244.146" dyno=web.1 connect=2ms service=72ms status=304 bytes=355