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

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

  
Forge Component
(10)
Published on 16 Feb by Pedro Oliveira
10 votes
Published on 16 Feb by Pedro Oliveira
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."