Export: SyntaxError: Unexpected non-whitespace character after JSON at position 4

PHPMaker General Discussion (PHPMaker)
5

There should be, the error clearly said: SyntaxError: Unexpected non-whitespace character after JSON at position 4.As the doc says:

In addition, make sure you have also configured your php.ini to display errors (and log errors if necessary):
error_reporting (int) - set it to E_ALL
display_errors (string) - set it to On

Also read Check HTTP Response.