TONS of errors

Hello,

For some reason, EDD is generating thousands of errors like this:

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2020-8-15 12:34:18 - Missing nonce when removing an item from the cart. Please read the following for more information: https://easydigitaldownloads.com/development/2018/07/05/important-update-to-ajax-requests-in-easy-digital-downloads-2-9-4
2020-8-15 12:34:19 - Missing nonce when removing an item from the cart. Please read the following for more information: https://easydigitaldownloads.com/development/2018/07/05/important-update-to-ajax-requests-in-easy-digital-downloads-2-9-4
2020-8-15 12:34:19 - Missing nonce when removing an item from the cart. Please read the following for more information: https://easydigitaldownloads.com/development/2018/07/05/important-update-to-ajax-requests-in-easy-digital-downloads-2-9-4
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These are filling up the “edd-debug” log file that EDD adds to the WP /uploads/ directory.

Questions:

1) The URL provided with each of those warnings is 404 not found:

https://easydigitaldownloads.com/development/2018/07/05/important-update-to-ajax-requests-in-easy-digital-downloads-2-9-4

Where can I find the information?

2) Why are these errors happening? The site does not use any custom code for the EDD stuff, it’s all based on the documentation and EDD shortcodes, etc.

Thanks for any help.