Problem DHT11 + HSR 04

Hello, I have the DHT-11 sensor and HRS-04 sensor.
the problem is when I connect two sensors , both do not read anything , DHT gives an error measure and the HSR measure 0 centimeters .
someone could tell me what problem I have and how I can fix ?

Please post your code and schematics as we cannot see both any advice is a wild guess.

but pull up resistors is a common problem.