heroku崩溃,没有关于错误的数据,只有http 500

i got my app at heroku server through git, now stuff that works on my local php server keeps crashing, BUT - whereas for a crash on localhost a php engine would always give me information about the error, here i just get HTTP500.

For example - if i create empty php where all i do is divide by zero, easyphp gives me warnings otices, while heroku server does nothing at all - empty page.

Right now the server crashes because of a DB related string( i checked), but all the feedback it gives is HTTP500 error, no details. On localhost this string works. How am i supposed to find out what's the problem? is there a way to get any feedback from heroku server?

Just use heroku logs! Apache should log the actual exception.