bootstrap.php returns a value of 1 in Craft CMS
In my particular case, I downgraded the Bitnami LAMP stack using instructions found here: https://community.bitnami.com/t/how-can-i-downgrade-to-php-5-6-from-php-7-0/51792

The downgrade fixed the issue although, had I seen Brad's answer before that, no doubt I could have fixed it using those posts....