Hanging up at 'I'm happy to start scanning for your deals!'

[sborowy]

Tried to run "Amazon-WD-Alerts" on RASPBIAN STRETCH LITE with php7.
php -v
PHP 7.0.27-0+deb9u1 (cli) (built: Jan 5 2018 13:51:52) ( NTS ) Copyright (c) 1997-2017 The PHP Group Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies with Zend OPcache v7.0.27-0+deb9u1, Copyright (c) 1999-2017, by Zend Technologies

Unfortunately it hangs up at
pi@raspberrypi:~/Amazon-WD-Alerts $ ./check.sh B01D1V77D2 I'm happy to start scanning for your deals!

Log only says
[2018-05-23 15:06:07] name.INFO: I'm happy to start scanning for your deals! [] []
for each launch.

Any idea?