Laravel 5 : Parse error: syntax error, unexpected '?', expecting variable (T_VARIABLE) : <p>On my Local server everything was good was using mailtrap mail server as smtp server. but when my website is on live server and when I trying to reset password (forgot password ) getting following error screenshot is attached.I am using hostgators cpanels  inbuilt smtp. 
any more details I will provide if needed.<a href="https://i.stack.imgur.com/WV0QO.png" rel="noreferrer"><img src="https://i.stack.imgur.com/WV0QO.png" alt="enter image description here"></a></p>
