Warning on Cloudflare data save

Hi Nico Martin and The Team

Excellent work. I just loved its UI, the minimalism, and the functionality it’s providing without touching on a single line of code.

Just found a single issue while setting up data:
I’s activating the Push Notification. While saving data from Cloudflare, after hitting the save button, I’s getting the following warning:

Warning: Invalid argument supplied for foreach() in …\wp-content\plugins\progressive-wp\Classes\class-pushpost.php on line 93

Inspected the code. I guess there’s no data on a fresh install under the option key pwp_post_types and without checking for data, the foreach loop is actually blind. We can check for data before the foreach, can solve the issue, I guess.

BTW, on the saving the changes after the credentials are there, the warning dissolves.

Machine: Windows 7 Ultimate
Server: Laragon (PHP 7.1.7, MySQL 5.7.19)
WP: 4.9.8
PWA: 2.0.1
DEBUG: true
Multisite: false