wpcf7_include_module_file() is undefined, which is causing a fatal error.

The error message you provided indicates that there is an issue with the Contact Form 7 plugin in your WordPress installation. Specifically, it states that the function wpcf7_include_module_file() is undefined, which is causing a fatal error.

Here are a few steps you can take to troubleshoot this issue:

1. Ensure that the Contact Form 7 plugin is properly installed and activated in your WordPress installation. You can go to the WordPress admin dashboard, navigate to the “Plugins” section, and check if Contact Form 7 is listed and activated. If it’s not installed, you can download and install it from the official WordPress plugin repository.
2. If the plugin is already installed and activated, try disabling and re-enabling it. Sometimes, this can resolve conflicts or issues with the plugin.
3. Check if there are any updates available for the Contact Form 7 plugin. Outdated plugin files can sometimes cause compatibility issues. If an update is available, proceed with updating the plugin to the latest version.
4. Ensure that all dependencies of the Contact Form 7 plugin are met. Some plugins or themes may rely on specific libraries or modules that are required by Contact Form 7. Make sure that all necessary components are installed and functioning correctly.
5. If the issue persists, it’s possible that there might be a conflict with another plugin or theme. Try deactivating other plugins one by one to identify if any of them are causing the conflict. Additionally, switch to a default WordPress theme (e.g., Twenty Twenty-One) temporarily to see if the issue is related to the current theme.
6. If none of the above steps resolve the issue, you can try reinstalling the Contact Form 7 plugin. Before proceeding with the reinstallation, it’s recommended to take a backup of your WordPress site, including the database and files, to avoid any potential data loss.

If the problem still persists after following these steps, it may be helpful to seek support from the Contact Form 7 plugin’s developer or check the plugin’s support forum for further assistance.