Where to find the debug info of fast-cgi and php?

[mcdull]

I have installed fast-cgi ipkg package and it install php for me automatically.
but it always give me 500 Internal Server Error when running application.
May I know if it generates any log file somewhere?
for the fast-cgi and php?
Thanks.

[metamorphose]

Hi, did anybody solve this problem? It would be important for me.