Symfony 1.4 Error 400 on the home page in prod env (not in dev env)

I have made an tested an application on my computer and all is working fine (I used only the开发者_Python百科 dev environment via the frontend_dev.php page).

When I deploy this application on the test server, I have the error 400 Bad Request below:

Bad Request

Your browser sent a request that this server could not understand.

I accessed to the website with the normal URL. I'm using symfony 1.4 with doctrine (no others plugins are involved), wamp 2 (php 5.3, apache 2.0.59).

If I try to access the application with the dev environment, it works.

Try checking if the no_script property on your application setting.yml file. If should be set to False, clear cache and try again

Thank you very much Guiman. You have leaded me to the answer.

The no_script_name property wasn't the origin of the problem. Instead, I have my .htaccess in the web directory which was badly generated (I swear on my pet's head that I haven't edited this file before). Below is the file generated by symfony (the bold attribute isn't working within the code one, look at the last line):

Options +FollowSymLinks +ExecCGI

<IfModule mod_rewrite.c>
  RewriteEngine On

  # uncomment the following line, if you are having trouble
  # getting no_script_name to work
  #RewriteBase /

  # we skip all files with .something
  #RewriteCond %{REQUEST_URI} \..+$
  #RewriteCond %{REQUEST_URI} !\.html$
  #RewriteRule .* - [L]

  # we check if the .html version is here (caching)
  RewriteRule ^$ index.html [QSA]
  RewriteRule ^([^.]+)$ $1.html [QSA]
  RewriteCond %{REQUEST_FILENAME} !-f

  # no, so we redirect to our front web controller
  RewriteRule ^(.*)$ index.php [QSA,L]
</IfModule>

And this is the updated one (again, look at the last line):

Options +FollowSymLinks +ExecCGI

<IfModule mod_rewrite.c>
  RewriteEngine On

  # uncomment the following line, if you are having trouble
  # getting no_script_name to work
  #RewriteBase /

  # we skip all files with .something
  #RewriteCond %{REQUEST_URI} \..+$
  #RewriteCond %{REQUEST_URI} !\.html$
  #RewriteRule .* - [L]

  # we check if the .html version is here (caching)
  RewriteRule ^$ index.html [QSA]
  RewriteRule ^([^.]+)$ $1.html [QSA]
  RewriteCond %{REQUEST_FILENAME} !-f

  # no, so we redirect to our front web controller
  RewriteRule ^(.*)$ **/myApp/index.php** [QSA,L]
</IfModule>

I don't know what happened but I will check on the symfony website I there are similar issues.