合同没有约定违约责任怎么办？

当合同中没有约定违约责任内容时，双方在合同发生违约时，应当履行违约责任。根据相关法律规定，如果合同没有约定违约责任，当事人一方违约的，应当按照实际损失进行赔偿。如果实际损失难以确定，可以参照违约行为发生时同类合同的市场价格或者参照履行义务的实际支出进行赔偿。

If there is no stipulation of liability for breach of contract in the contract, both parties should perform their liability for breach of contract when the contract is breached. According to relevant laws and regulations, if the contract does not stipulate the liability for breach of contract, the party who breaches the contract shall compensate for the actual loss. If the actual loss is difficult to determine, it can be compensated by referring to the market price of similar contracts at the time of the breach or by referring to the actual expenses incurred in performing the obligation.