Should display a valid error message when max upload size exceeds

[mayeenulislam]

• Operating system : Windows XP, Windows 10
• Laravel version : 5.6.16
• Package version : ~1.8
• Steps to reproduce your issue :
  • Check the max_file_size in config/lfm.php
  • Try to upload a file exceeding the declaration
  • You will get the following error:

Warning: POST Content-Length of 16687728 bytes exceeds the limit of 8388608 bytes in Unknown on line 0
{ "message": "" }

• Screenshots of browser console :
  

EXPECTED BEHAVIOR

A nice error message like below:

The file exceeds the maximum upload size, and cannot be uploaded

[streamtw]

Duplicate of #608 .