Play SMS is throwing error when editing existing contact from Phonebook see the screencast https://techtun.es/QGjrsv
php log is showing the following error
2019.06.12 14:23:24
[12-Jun-2019 08:23:21] WARNING: [pool www] child 30690 said into stderr: “[12-Jun-2019 14:23:21 Asia/Dhaka] PHP Fatal error: Uncaught Error: [] operator not supported for strings in /var/www/t-sms-app/plugin/feature/sms_subscribe/sms_subscribe.php:727”
Please fix this.