It's most likely your php erroring. Please check the output of "php -v".
PHP 5.3.29 (cli) (built: Sep 17 2018 10:44:01)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2014 Zend Technologies
with the ionCube PHP Loader v10.3.8, Copyright (c) 2002-2019, by ionCube Ltd.
I have the same problem.
The output from my php -v command is:
Code:PHP 5.3.29 (cli) (built: Sep 17 2018 10:44:01) Copyright (c) 1997-2014 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2014 Zend Technologies with the ionCube PHP Loader v10.3.8, Copyright (c) 2002-2019, by ionCube Ltd.
Could it be that my primary PHP version is no longer supported?
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
./build php
libtool: install: install .libs/libphp7.so /usr/lib/apache/libphp7.so
libtool: install: install .libs/libphp7.lai /usr/lib/apache/libphp7.la
libtool: warning: remember to run 'libtool --finish /usr/local/directadmin/custombuild/php-7.1.33/libs'
libtool --finish /usr/local/directadmin/custombuild/php-7.1.33/libs
libtool: finish: invalid argument `/usr/local/directadmin/custombuild/php-7.1.33/libs'