Can't store images to the database using Paperclip - ruby-on-rails

Question

I'm trying to create a very simple program which upload image to the database using Paperclip in ROR. But the image can't go to the database everytime I press SUBMIT. Can anyone please point me where I did wrong.
This is my LOG File
Started POST "/users" for 127.0.0.1 at 2017-03-22 21:03:03 +1000
Processing by UsersController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"P1JjsD8GMBJbrAnOnc/RtTDDuVOCiv/z
sMhvM0Lzb3+bELWElYYN3FAVgERADmv8E1+dXK5nDais+LmmwaCa4Q==", "user"=>{"title"=>"eeee"
, "avatar"=>#<ActionDispatch::Http::UploadedFile:0xa40e398 #tempfile=#<Tempfile:C:/
Users/GaryVLC/AppData/Local/Temp/RackMultipart20170322-15228-psq6nh.jpg>, #original
_filename="14563434_519556131584166_3038665901337502288_n.jpg", #content_type="imag
e/jpeg", #headers="Content-Disposition: form-data; name=\"user[avatar]\"; filename=
\"14563434_519556131584166_3038665901337502288_n.jpg\"\r\nContent-Type: image/jpeg\
r\n">}, "commit"=>"Submit"}
Command :: file -b --mime "C:/Users/GaryVLC/AppData/Local/Temp/4233aadfd0ba434db17d
ee20d9613cee20170322-15228-tizi43.jpg"
[paperclip] Content Type Spoof: Filename 14563434_519556131584166_30386659013375022
88_n.jpg (image/jpeg from Headers, ["image/jpeg"] from Extension), content type dis
covered from file command: . See documentation to allow this combination.
(0.0ms) begin transaction
Command :: file -b --mime "C:/Users/GaryVLC/AppData/Local/Temp/4233aadfd0ba434db17d
ee20d9613cee20170322-15228-qcbjc3.jpg"
[paperclip] Content Type Spoof: Filename 14563434_519556131584166_30386659013375022
88_n.jpg (image/jpeg from Headers, ["image/jpeg"] from Extension), content type dis
covered from file command: . See documentation to allow this combination.
Command :: file -b --mime "C:/Users/GaryVLC/AppData/Local/Temp/4233aadfd0ba434db17d
ee20d9613cee20170322-15228-1l2s8em.jpg"
[paperclip] Content Type Spoof: Filename 14563434_519556131584166_30386659013375022
88_n.jpg (image/jpeg from Headers, ["image/jpeg"] from Extension), content type dis
covered from file command: . See documentation to allow this combination.
(0.0ms) rollback transaction
Rendering users/new.html.erb within layouts/application
Rendered users/new.html.erb within layouts/application (1.0ms)
Completed 200 OK in 108ms (Views: 53.3ms | ActiveRecord: 0.0ms)