Hello,
I have read your requirements and I can fix this php error on Woocommerce Addons plugin.
I have 7+ years of experience in WordPress WooCommerce Online Store Development using Addons plugin with Plugin Development, Template Creation/Customization, MySQL, PHP, JavaScript, jQuery, HTML5, CSS3 and Responsive design development
I have worked on multiple websites using WordPress WooCommerce and have made 200+ eCommerce shopping websites using various platforms and skills. I have good experience with eCommerce user experience.
You can see my past client's review on profile page here that explains my level of satisfaction from clients: https://www.freelancer.com/u/akash9958.html
Looking forward to hearing from you.
Thanks.