make sure cb is always defined ans a function before calling
make sure cb is always defined ans a function before calling

domness/signalmaster,martinhartt/signalmaster,diorahman/signalmaster,kosmosby/signalmaster,FlorianLepot/signalmaster,IanMendozaJaimes/signalmaster,procandi/signalmaster,martinkubat/signalmaster,cdriscol/signalmaster