[File Upload] Upload Error "http error (404)"

[File Upload] Upload Error "http error (404)"

  
Forge Component
(11)
Published on 3 May by José Gomes
11 votes
Published on 3 May by José Gomes
Used this forge added to reference,

After I select the file, it shows the progressive bar uploading, then when its at 100% it says ... file name... - http error (404)

then disappeared

Same error if uploaded by manuelly 

I went into service center found an error

"'/my application name/MultiUpload.aspx' does not exist."