[ERROR] 500 - POST on hosted mode

[Fon Vitale]

Hi there,

i'm building a GWT project that recolect information about weather
from Google Api Weather using a servelt. This servlet connects with
Google and parses the XML given. All this works fine, but the
comunication. The callback execute onFailre method instead of
onSucces. I get this in hosted mode:

500 - POST /tourismmultiagent/weather (127.0.0.1) 57 bytes

I think this error is an internal error. I have follow the tutorials
and documentation to make this project so I don't know how can I solve
the problem. Any idea?

[Yozons Support on Gmail]

Gotta look at all your logs, console, etc.  Most likely it's a null pointer exception or a some sort of serialization issue because you have an object without a zero-arg constructor.  Hard to tell with little info....

[Fon Vitale]

Hi,

Finally, it works. I don't know why, but reducing the number of
attributes in the serializated class it works. But why?