what is loop 20

Every time I make a change in the game settings the same thing is looped in chat, I tried to use the command /gamerule sendcommandfeedback false but it did not work. The only way it stopped is if I replace the world, "[loop 20: Successfully executed 78 function entries](and sometimes the number changes)is looped gain and again and my friends on PE cant even see their screens and its really annoying me