Web Profiler throws 404 error on new Symfony 3.2 running in a Docker stack

[reypm]

Q	A
Bug report?	yes
Feature request?	no
BC Break report?	no
RFC?	no
Symfony version	3.2.2

I am starting a new application and I decide to use Docker for development since it's faster and easy to use. I have build my own stack running Centos 7 with Supervisord, Apache/2.4.6, PHP 7.1.0 and MySQL 5.7.17. The stack is available here and it works as it should be. The instructions to get it up & running are in the README.

The problem I am having is coming from the Web Profiler and I am not able to find out why. As soon as I try to access: http://symfonyapp.local/app_dev.php the default page is shown but the next I get is a message saying:

An error occurred while loading the web debug toolbar (404: Not Found)

I have check the logs in the httpd container and this is what I get from there:

httpd_1    | 172.18.0.1 - - [17/Jan/2017:00:13:43 +0000] "GET /app_dev.php HTTP/1.1" 200 31820 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36"
httpd_1    | 2017-01-17 00:13:44,770 DEBG 'httpd' stdout output:
httpd_1    | [Tue Jan 17 00:13:44.770329 2017] [proxy_fcgi:error] [pid 15:tid 140001497048832] [client 172.18.0.1:54532] AH01071: Got error 'Unable to open primary script: redirect:/app.php/28df54 (No such file or directory)\n', referer: http://symfonyapp.local/app_dev.php

I have checked all this topics and tried all in there:

• WebProfilerBundle 404 (Not Found) #12075
• Web Profiler after update throws 404 errors #10806 (@xabbuh asked for replication steps I tried to leave them here)
• http://stackoverflow.com/questions/31367192/symfony-profiler-throws-404
• http://stackoverflow.com/questions/16236623/symfony-2-an-error-occurred-while-loading-the-web-debug-toolbar-404-not-foun
• http://stackoverflow.com/questions/21058750/symfony-2-4-an-error-occurred-while-loading-the-web-debug-toolbar-404-not-fou
• http://stackoverflow.com/questions/16236623/symfony-2-an-error-occurred-while-loading-the-web-debug-toolbar-404-not-foun
• http://stackoverflow.com/questions/41646272/ah01071-got-error-unable-to-open-primary-script-container-permissions-or-sy
• http://stackoverflow.com/questions/21058750/symfony-2-4-an-error-occurred-while-loading-the-web-debug-toolbar-404-not-fou
• http://stackoverflow.com/questions/12424864/symfony-2-404-not-found-error-when-tryes-to-open-app-dev-php
• http://stackoverflow.com/questions/31342255/why-is-the-symfony2-profiler-throwing-404s-when-using-the-memcachedprofilerstora
• http://stackoverflow.com/questions/29345720/404-errors-on-acces-to-wdt-token
• http://stackoverflow.com/questions/32923216/404-on-wdt-symfony-webprofiler-doesnt-generate-any-profile-data

Can I get some advice on this? Is this a Symfony3 issue, a permission issue, anything else?

I have an active topic open in SO here as well and so far I couldn't fix the issue.

[javiereguiluz]

I'm sorry but I must close this issue. For now, it looks like a support question. When this is confirmed as a Symfony bug (or there's a stronger suspicion about that) we can reopen it. Thanks for understanding it.

There are a lot of Symfony developers using Docker and Symfony 3.2, so this can't be a general problem. In addition to StackOverflow, you can also consider using the #support channel in the Symfony Slack chat.

[Mookum]

Try or add or edit your .htaccess file like this
`
# Use the front controller as index file. It serves as a fallback solution when
# every other rewrite/redirect fails (e.g. in an aliased environment without
# mod_rewrite). Additionally, this reduces the matching process for the
# start page (path "/") because otherwise Apache will apply the rewriting rules
# to each configured DirectoryIndex file (e.g. index.php, index.html, index.pl).
DirectoryIndex index.php

# By default, Apache does not evaluate symbolic links if you did not enable this
# feature in your server configuration. Uncomment the following line if you
# install assets as symlinks or if you experience problems related to symlinks
# when compiling LESS/Sass/CoffeScript assets.
# Options FollowSymlinks

# Disabling MultiViews prevents unwanted negotiation, e.g. "/index" should not 
  resolve
# to the front controller "/index.php" but be rewritten to "/index.php/index".
<IfModule mod_negotiation.c>
  Options -MultiViews
</IfModule>

<IfModule mod_rewrite.c>
  RewriteEngine On

# Determine the RewriteBase automatically and set it as environment variable.
# If you are using Apache aliases to do mass virtual hosting or installed the
# project in a subdirectory, the base path will be prepended to allow proper
# resolution of the index.php file and to redirect to the correct URI. It will
# work in environments without path prefix as well, providing a safe, one-size
# fits all solution. But as you do not need it in this case, you can comment
# the following 2 lines to eliminate the overhead.
  RewriteCond %{REQUEST_URI}::$1 ^(/.+)/(.*)::\2$
  RewriteRule ^(.*) - [E=BASE:%1]

# Sets the HTTP_AUTHORIZATION header removed by Apache
  RewriteCond %{HTTP:Authorization} .
  RewriteRule ^ - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

# Redirect to URI without front controller to prevent duplicate content
# (with and without `/index.php`). Only do this redirect on the initial
# rewrite by Apache and not on subsequent cycles. Otherwise we would get an
# endless redirect loop (request -> rewrite to front controller ->
# redirect -> request -> ...).
# So in case you get a "too many redirects" error or you always get redirected
# to the start page because your Apache does not expose the REDIRECT_STATUS
# environment variable, you have 2 choices:
# - disable this feature by commenting the following 2 lines or
# - use Apache >= 2.3.9 and replace all L flags by END flags and remove the
#   following RewriteCond (best solution)
  RewriteCond %{ENV:REDIRECT_STATUS} ^$
  RewriteRule ^index\.php(?:/(.*)|$) %{ENV:BASE}/$1 [R=301,L]

# If the requested filename exists, simply serve it.
# We only want to let Apache serve files and not directories.
  RewriteCond %{REQUEST_FILENAME} -f
  RewriteRule ^ - [L]

# Rewrite all other queries to the front controller.
  RewriteRule ^ %{ENV:BASE}/index.php [L]
</IfModule>

<IfModule !mod_rewrite.c>
  <IfModule mod_alias.c>
    # When mod_rewrite is not available, we instruct a temporary redirect of
    # the start page to the front controller explicitly so that the website
    # and the generated links can still be used.
    RedirectMatch 307 ^/$ /index.php/
    # RedirectTemp cannot be used instead
  </IfModule>
</IfModule>

`