Some people complain of bloating or fatty diarrhea for several weeks to months after removal of the gall bladder. This is usually related to high fat content of their diet and less bile storage capacity. If they reduce the fat content of their diet the symptoms usually improve.
More severe complications are abscess formation or bile leak. Often these can be treated with interventions short of surgery.
Lastly, the dreaded, but very rare bile duct injury. This is injury of the duct that connects the liver to the intestine. This requires a large surgery to reconnect the duct to the intestine.