Contact Form 7 and WooCommerce email preview not working

Hi
I’m using the Woodmart theme on an updated WooCommerce site, and I’m encountering a persistent issue related to the email preview from the admin panel and the Contact Form 7. Below is a summary of the tests performed and the current status of the problem.
(1) Contact Form 7 is not working: There was an error trying to send your message. Please try again later.
(1) With the Twenty Twenty-Four theme active, the WooCommerce email preview works correctly.
(2) With Woodmart activated, the preview returns the following message:
“An error occurred while trying to preview the email.”
(3) When attempting to send a test email from the WooCommerce email settings screen, the following error appears:
“The response is not a valid JSON response.”
(4) The debug.log file shows multiple notices, including:
ob_end_flush(): Failed to send buffer of zlib output compression (1)
Function _load_textdomain_just_in_time was called incorrectly […] for woocommerce
(5) WPML Multilingual CMS, WPML String Translation and WooCommerce Multilingual & Multicurrency plugins have been deactivated for testing purposes, with no change in behavior.
(6) Order emails are working.
What can I do now?

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Hello,

Please read the below article on how to fix it:

https://ryancameron.me/wordpress/contact-form-7-how-to-fix-there-was-an-error-trying-to-send-your-message-please-try-again-later/#orange-error

https://contactform7.com/faq/after-submitting-the-form-i-get-an-error-message/

For the email preview, please make sure you are using the latest version of the theme, Update version 8.1.2.

If the issue remains, please deactivate all the third-party plugins and activate only theme-required plugins on the site, and then check the issue.

Otherwise, if the issue still exists, then keep the third-party plugins deactivated and share the WP login details so I can check and give you a possible solution.

Best Regards,

[Author]

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