"Internal Server Error" at "File Upload" page when use drag and drop file to upload

[thaissiqueira]

When I use drag and drop to upload the some-file.txt file at File Upload page, the system return a Internal Server Error.

Look the log:

{:filename=>"some-file.txt", :type=>"text/plain", :name=>"file", :tempfile=>#<File:/tmp/RackMultipart20150803-17606-1odmw8i>, :head=>"Content-Disposition: form-data; name=\"file\"; filename=\"some-file.txt\"\r\nContent-Type: text/plain\r\n"}
127.0.0.1 - - [03/Aug/2015 10:19:57] "POST /upload HTTP/1.1" 200 1393 0.0039
nil
NoMethodError - undefined method `[]' for nil:NilClass:
    .../the-internet/server.rb:30:in `block in <top (required)>'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1603:in `call'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1603:in `block in compile!'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:966:in `[]'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:966:in `block (3 levels) in route!'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:985:in `route_eval'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:966:in `block (2 levels) in route!'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1006:in `block in process_route'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1004:in `catch'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1004:in `process_route'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:964:in `block in route!'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:963:in `each'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:963:in `route!'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1076:in `block in dispatch!'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1058:in `block in invoke'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1058:in `catch'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1058:in `invoke'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1073:in `dispatch!'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:898:in `block in call!'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1058:in `block in invoke'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1058:in `catch'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1058:in `invoke'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:898:in `call!'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:886:in `call'
    /var/lib/gems/1.9.1/gems/rack-protection-1.5.3/lib/rack/protection/xss_header.rb:18:in `call'
    /var/lib/gems/1.9.1/gems/rack-protection-1.5.3/lib/rack/protection/base.rb:49:in `call'
    /var/lib/gems/1.9.1/gems/rack-protection-1.5.3/lib/rack/protection/base.rb:49:in `call'
    /var/lib/gems/1.9.1/gems/rack-protection-1.5.3/lib/rack/protection/path_traversal.rb:16:in `call'
    /var/lib/gems/1.9.1/gems/rack-protection-1.5.3/lib/rack/protection/json_csrf.rb:18:in `call'
    /var/lib/gems/1.9.1/gems/rack-protection-1.5.3/lib/rack/protection/base.rb:49:in `call'
    /var/lib/gems/1.9.1/gems/rack-protection-1.5.3/lib/rack/protection/base.rb:49:in `call'
    /var/lib/gems/1.9.1/gems/rack-protection-1.5.3/lib/rack/protection/frame_options.rb:31:in `call'
    /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/session/abstract/id.rb:225:in `context'
    /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/session/abstract/id.rb:220:in `call'
    /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/logger.rb:15:in `call'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:210:in `call'
    /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/head.rb:11:in `call'
    /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/methodoverride.rb:21:in `call'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/show_exceptions.rb:21:in `call'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:180:in `call'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:2014:in `call'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1478:in `block in call'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1788:in `synchronize'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:1478:in `call'
    /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/lint.rb:49:in `_call'
    /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/lint.rb:37:in `call'
    /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/showexceptions.rb:24:in `call'
    /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/commonlogger.rb:33:in `call'
    /var/lib/gems/1.9.1/gems/sinatra-1.4.5/lib/sinatra/base.rb:217:in `call'
    /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/chunked.rb:43:in `call'
    /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/content_length.rb:14:in `call'
    /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60:in `service'
    /usr/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
    /usr/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
    /usr/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
127.0.0.1 - - [03/Aug/2015 10:19:59] "POST /upload HTTP/1.1" 500 158284 0.0409

[tourdedave]

What browser, browser version, and operating system are you using?

[thaissiqueira]

Browsers:

• Google Chrome version 43.0.2357.81
• Mozilla Firefox for Linux Mint mint - 1.0

OS:

• Linux Mint 17.1 Rebecca

[tourdedave]

Confirmed, thanks!

Steps to reproduce:

• Drag and drop a file into the form
• Click Upload

Drag and dropping a file into the form automatically triggers the upload. There's no need to click Upload but if you do it triggers the error.

[TPMartin]

Has this bug been looked at or is this repo not maintained anymore?