webmoon

Hey Guys!
I think I have found the cause of the problem and therefore the solution. Thanks to this thread.

My .htaccess has a rule to force a trailing slash after all URLs. The rule is:

# Force trailing slash
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_URI} !(.*)/$
RewriteRule ^(.*)$ https://mysite.com.br/$1/ [L,R=301]

So, as @mikele3 explained in the thread linked above, this redirection was forcing all URLs to have a “/” in the end, including the wp-json path, which is used by Contact Form 7 after the 4.8 upgrade.

I just have to add an exception in .htaccess to not redirect the /wp-json path. The final snippet is:

# Force trailing slash
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_URI} !(.*)/$
RewriteCond %{REQUEST_URI} !^/wp-json
RewriteRule ^(.*)$ https://mysite.com.br/$1/ [L,R=301]

Now I have the version 4.9.1 and all the forms are sending through ajax without any issue.

I hope this could help others with the same problem.

• This reply was modified 8 years, 1 month ago by webmoon.