kwhiteboard error

 make
Scanning dependencies of target kwhiteboard_automoc
Generating TubesManager.moc
Generating OutgoingTube.moc
Generating kwhiteboardwidget.moc
Generating TelepathyChannelManager.moc
Generating kwhiteboard.moc
Generating IncomingTube.moc
Generating TubeLauncher.moc
[  0%] Built target kwhiteboard_automoc
Scanning dependencies of target kwhiteboard
[ 10%] Building CXX object src/CMakeFiles/kwhiteboard.dir/kwhiteboard_automoc.o
[ 20%] Building CXX object src/CMakeFiles/kwhiteboard.dir/main.o
[ 30%] Building CXX object src/CMakeFiles/kwhiteboard.dir/kwhiteboard.o
[ 40%] Building CXX object src/CMakeFiles/kwhiteboard.dir/kwhiteboardwidget.o
[ 50%] Building CXX object src/CMakeFiles/kwhiteboard.dir/TelepathyChannelManager.o
In file included from /home/puneet/puneet/kwhiteboard/kwhiteboard/src/TelepathyChannelManager.cpp:3:
/usr/include/telepathy-qt4/TelepathyQt/abstract-client.h:297: warning: ‘virtual void Tp::AbstractClientHandler::handleChannels(const Tp::MethodInvocationContextPtr<Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil>&, const Tp::AccountPtr&, const Tp::ConnectionPtr&, const QList<Tp::SharedPtr<Tp::Channel> >&, const QList<Tp::SharedPtr<Tp::ChannelRequest> >&, const QDateTime&, const Tp::AbstractClientHandler::HandlerInfo&)’ was hidden
/home/puneet/puneet/kwhiteboard/kwhiteboard/src/TubesManager.h:23: warning:   by ‘virtual void TubesManager::handleChannels(const Tp::MethodInvocationContextPtr<Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil>&, const Tp::AccountPtr&, const Tp::ConnectionPtr&, const QList<Tp::SharedPtr<Tp::Channel> >&, const QList<Tp::SharedPtr<Tp::ChannelRequest> >&, const QDateTime&, const QVariantMap&)’
/home/puneet/puneet/kwhiteboard/kwhiteboard/src/TelepathyChannelManager.cpp:5: error: default argument given for parameter 1 of ‘TelepathyChannelManager::TelepathyChannelManager(QObject*)’
/home/puneet/puneet/kwhiteboard/kwhiteboard/src/TelepathyChannelManager.h:18: error: after previous specification in ‘TelepathyChannelManager::TelepathyChannelManager(QObject*)’
/home/puneet/puneet/kwhiteboard/kwhiteboard/src/TelepathyChannelManager.cpp: In constructor ‘TelepathyChannelManager::TelepathyChannelManager(QObject*)’:
/home/puneet/puneet/kwhiteboard/kwhiteboard/src/TelepathyChannelManager.cpp:8: error: cannot allocate an object of abstract type ‘TubesManager’
/home/puneet/puneet/kwhiteboard/kwhiteboard/src/TubesManager.h:15: note:   because the following virtual functions are pure within ‘TubesManager’:
/usr/include/telepathy-qt4/TelepathyQt/abstract-client.h:297: note:     virtual void Tp::AbstractClientHandler::handleChannels(const Tp::MethodInvocationContextPtr<Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil, Tp::MethodInvocationContextTypes::Nil>&, const Tp::AccountPtr&, const Tp::ConnectionPtr&, const QList<Tp::SharedPtr<Tp::Channel> >&, const QList<Tp::SharedPtr<Tp::ChannelRequest> >&, const QDateTime&, const Tp::AbstractClientHandler::HandlerInfo&)
make[2]: *** [src/CMakeFiles/kwhiteboard.dir/TelepathyChannelManager.o] Error 1
make[1]: *** [src/CMakeFiles/kwhiteboard.dir/all] Error 2
make: *** [all] Error 2