Hi,
We have been working with Contact Form 7 for quite some time. Let me elaborate on my current setup.
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WP version : WordPress 5.6.7
CF7 version : Version 5.4
Yoast SEO : Version 18.0
BReeze : Version 2.0.1
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When Yoast was activated on the website, the CF7 forms were not getting submitted and gave an error.
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19:24:14.467 XHRGEThttps://eschoolapp.in/wp-json/contact-form-7/v1/contact-forms/213176/refill
[HTTP/1.1 500 Internal Server Error 1533ms]
19:24:16.012
Response { type: “basic”, url: “https://eschoolapp.in/wp-json/contact-form-7/v1/contact-forms/213176/refill”, redirected: false, status: 500, ok: false, statusText: “Internal Server Error”, headers: Headers, body: ReadableStream, bodyUsed: false }
index.js:1:6538`
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Going forward we took multiple steps like changing the previously installed WP-cache to Breeze and Downloading Version 5.5 again from the previous plugins repo.
However, as we disabled the YOAST SEO plugin this error was gone. The forms started working perfectly.
I am not sure of How CF7 would be affected by the SEO plugin but, Yoast is an integral part of our system. We wanted to bring this to your notice. I hope that someone can point us in the right direction as the error elected above is from the index.js of CF7.