This seems to have fixed the issue.
Thank you for your support.
Hi Michael,
I have made these actions on the production site and the testing site as both were experiencing the Deadlock error intermittently.
I will follow up in 24/48 hours if there are no errors, I will mark this issue as
resolved, otherwise, I will follow up with the related error message.
EDIT: Both WP Core & Yoast SEO were updated to the most current version.
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This reply was modified 4 years, 4 months ago by tomfreeform. Reason: Version of Core & Yoast SEO
Hi Takayuki,
I have same problems. I got around error, by using wpcf7_skip_spam_check filter.
On sites which received the error, I have the following plugins;
Better Search Replace, Classic Editor, Flamingo, Insert Headers and Footers, UpdraftPlus & Yoast SEO.
Hope this helps.