Webform with File upload field throwing "... field is required" error I have created a Webform, which has two file fields (i.e. Attach document 1 and Attach document 2). Both of them are mandatory and files are to be uploaded in the "Private" folder. 

Now when someone attaches the files and submits the form, it throws error messages "Attach document 1 field is required" and "Attach document 2 field is required". If I invoke the validation, then it works. I have checked in the server and the files are uploaded properly. So I think it is "Webform" or "Form" issue.
This can be solved by applying the patches found here:


#49 https://www.drupal.org/node/2675170#comment-10908802
#22 https://www.drupal.org/node/2678822#comment-10926613


This will hopefully be resolved just by updating for future versions of drupal core and webform.