PHP framework - a problem encountered by symfony2

Question

I am using the symfony framework today, and I installed the framework in vagrant!
The problem now is that it can be accessed normally, but the syfmony debugging tool cannot appear! And an error is reported
Have you guys encountered any?

When I opened it through firebug, I found that this address could not be accessed correctly

Answer 1

Now the problem has been solved
The main problem is the configuration of nginx
I just used the configuration from the official website

Answer 2

Never encountered it, http://stackoverflow.com/questions/16236623/symfony-2-an-error-occurre...
Try this?

Answer 3

This is probably because the profiler component cannot be loaded normally. Check in your security.yml file and confirm whether the firewalls allows the URI of _wdt.

Answer 4

There are many reasons for this problem. @thenbsp mentioned is one of them.

In addition, if you have a kernel event listener registered, certain database errors may also cause this problem.

Check app/logs/dev.log in development mode to check whether any exceptions are thrown