Can't login: Failed to load class "org.slf4j.impl.StaticLoggerBinder".

[greyblake]

I run the application as README says with

sbt run

I enter my login and password but nothing happens.
The output says:

[info] Running Main 
[2015-01-18 02:33:04.127] Trying to log in to Duolingo as greyblake
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

Any ideas?

Environment

System: Debian Wheezy
Sbt: sbt launcher version 0.13.7
Java:

java version "1.6.0_33"
OpenJDK Runtime Environment (IcedTea6 1.13.5) (6b33-1.13.5-2~deb7u1)
OpenJDK 64-Bit Server VM (build 23.25-b01, mixed mode)

[abesto]

Thanks for letting me know! The response format to the login request from Duolingo changed a bit, expect the fix in a few minutes.

[greyblake]

@abesto Thanks, now it works! =)