Whoops\Exception\ErrorException count(): Parameter must be an array or an object that implements Countable

When trying to do fwconsle ma upgradeall or "check modules" from the web interface, I get the following errorQ

Whoops\Exception\ErrorException thrown with message "count(): Parameter must be an array or an object that implements Countable"

Stacktrace:
#7 Whoops\Exception\ErrorException in /var/www/html/admin/modules/zulu/functions.inc.php:201
#6 Whoops\Run:handleError in /var/www/html/admin/modules/zulu/functions.inc.php:201
#5 zulu_module_repo_parameters_callback in /var/www/html/admin/libraries/BMO/Modules.class.php:302
#4 FreePBX\Modules:functionIterator in /var/www/html/admin/libraries/modulefunctions.class.php:3158
#3 module_functions:generate_remote_urls in /var/www/html/admin/libraries/modulefunctions.class.php:3054
#2 module_functions:get_remote_contents in /var/www/html/admin/libraries/modulefunctions.class.php:141
#1 module_functions:getonlinexml in /var/www/html/admin/page.modules.php:96
#0 include in /var/www/html/admin/config.php:477

framework | 16.0.21.14
zulu | 16.0.16