What Causes Shoulder Pain With Crepitus After Exercising?

hi im a 27 year old male, im 1.83 m high and weight 62 kgs, i recently started working out and ive been lifting 50 kgs, 25 kg each side. everytime i lift, i hear a sound on my left arm/shoulder, it seems like its tearing something and ive been encountering a huge pain on that shoulder. what can it be?