Woo add to Quote error

I installed the Woo add to Quote plugin and on the first quote it gave this error on the user account page where the quotes are listed.

Woo plugin – Version 4.7.1

Warning: Illegal string offset 'quote_general_data' in /home/solarspe/public_html/ss_shop/wp-content/plugins/woo-add-to-quote/functions.php on line 325

Warning: Illegal string offset 'time' in /home/solarspe/public_html/ss_shop/wp-content/plugins/woo-add-to-quote/functions.php on line 325
Quote Time :

Warning: Illegal string offset 'quote_general_data' in /home/solarspe/public_html/ss_shop/wp-content/plugins/woo-add-to-quote/functions.php on line 326

Warning: Illegal string offset 'date' in /home/solarspe/public_html/ss_shop/wp-content/plugins/woo-add-to-quote/functions.php on line 326
Quote Date :

Warning: Illegal string offset 'quote_general_data' in /home/solarspe/public_html/ss_shop/wp-content/plugins/woo-add-to-quote/functions.php on line 327

Warning: Illegal string offset 'sent_to' in /home/solarspe/public_html/ss_shop/wp-content/plugins/woo-add-to-quote/functions.php on line 327
Sent To :

Warning: Invalid argument supplied for foreach() in /home/solarspe/public_html/ss_shop/wp-content/plugins/woo-add-to-quote/functions.php on line 339

Where can I look at finding a solution please?