“Out of Gas” refers to a situation where a transaction or smart contract execution fails because it exceeds the allowed computational limits set by the network. Each operation within a smart contract consumes a certain amount of gas, which is a unit that measures computational work.When developers create a transaction, they need to specify a gas limit, determining how much computational work they are willing to pay for. If the transaction runs out of gas before completion, it is reverted, and none of the changes are applied, although the gas used up to that point is still deducted from the user’s account.This situation can occur due to insufficient gas limit settings or overly complex operations within the smart contract. To avoid running out of gas, users should carefully estimate the required gas for their transactions and monitor the gas prices on the network, which can fluctuate.