Hi,
I have this problem at the moment and have:
PHP 7.1.33 (cli) (built: Mar 4 2020 14:11:04) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2018 Zend Technologies
I tried using
./build php
Scrolling back through the code I everything seemed to run ok...