Why do I often get errors on fine html codes?

Question

I mean the code playground often shows error on fine html codes. Why does this happen?

Answer 1

{ __ƒαянαn__ } facing same problem many times it may be due to overload at server as the members available here are in big amount and if some user code nearly at same time and execute that then due to overload no connection, time limit exceeds or in web code the output can be not shown.
Clearing cache and then waiting for sometime may help but slow server responce is the real problem in this server may be it will fix soon

Answer 2

Preity That also happens to me. But my problem is that the console shows odd errors related to js, which are not present there.