The is_ajax function is deprecated since version 6.1.0. Replace with wp_doing_aj

I have this also from a variety of third party plugins. Why would you make this change without a fallback to handle this cascading error?

Plugins I have identified to throw the error in addition to the paypal payment gateway plugin mentioned below:

facebook for woocommerce
woocommerce checkout addons
woocommerce cost of goods
WooCommerce Extra Product Sorting Options
Woocommerce order status manager
WooCommerce Product SKU Generator
WooCommerce Square

Not exactly insignificant oversights.

• This reply was modified 2 years, 10 months ago by eaec.
• This reply was modified 2 years, 10 months ago by eaec.
• This reply was modified 2 years, 10 months ago by eaec.

WooCommerce PayPal Payments is another plugin not ready for WC 6.1.0

Hi there ??

Thanks for reporting this!

This forum is for questions and issues that are directly related to the free WooCommerce core plugin.

If your site is showing a PHP notice “The is_ajax function is deprecated since version 6.1.0. Replace with wp_doing_aj” most likely your theme and/or one or more of your plugins are still using the is_ajax deprecated function and you’re receiving a warning.

The best way forward is to perform a conflict test to locate the culprit and consequently reach out to the theme/plugin developers via their website/forum to have that fixed.

I’ll mark this topic as solved for now. Please feel free to open a new topic if you have any other questions.

i encountered the same error, how do I downgrade the plugin?

Hello,

The culprit for me is: sequential woocommerce order numbers
I had to deactivate it for it to work

The best way forward is to perform a conflict test to locate the culprit and consequently reach out to the theme/plugin developers via their website/forum to have that fixed.

WooCommerce developers are the same for WooCommerce PayPal Payments, so we are reaching to them here where the issue was created.

@thezeronow Try Plugin “WP Rollback” – worked good