The Gemholic Ecosystem project, launching its $GEMS token, encountered a contract problem when listing the token. Gemholic Ecosystem is a multi-platform that recently rolled out its contract token and presale on zkSync Era.
Subsequent problems occurred due to the .transfer() function, it strictly depends on the cost of gas, the function works with a strictly programmed amount of gas at 2300. This inflexibility can lead to a serious breakdown of the smart contract, in addition, gas compensation at 60 does not work with it % - 95% of zkSync Era. All developers were warned about its instability 3 years ago in an article on consensys (https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/).
The good news is that the funds are safe. The zkSync team has found a solution to unfreeze the contract. Probably in the future, a similar problem will be taken into account by blockchain developers.
