When I try to upload image (composer form, User Avatar etc.) the Uploading…  never ends. 
I tested everything:
Heroku -> S3 connection correct (file uploaded): 
 
Heroku response Success (HTTP Status 200) 
It looks like some JS error but No JS errors 
The same configuration works properly on my local Ubuntu.  
 
Any idea? Thanks for response
             
            
               
               
               
            
            
           
          
            
            
              Why is Heroku involved here? We can only support the docker-based install.
             
            
               
               
               
            
            
           
          
            
            
              Heroku because my client choiced Heroku.
Heroku is a server layer. As you see the server response is correct (identical as at my Local machine). File saved to S3 correctly. The problem is client (Browser+JS) side.
             
            
               
               
               
            
            
           
          
            
              
                sam  
                (Sam Saffron)
               
              
                  
                    2016 年3 月 25 日 22:03
                   
                   
              5 
               
             
            
              We use s3 uploads on meta, they work fine
I suspect something is off with your heroku install, this is one of the many reasons docker is the only install method we support
             
            
               
               
               
            
            
           
          
            
            
              The problem was invalid https protocol configuration. Fixed. Thanks for help
             
            
               
               
              3 个赞