In SystemContractHelper, function getZkSyncMeta constructs the ZkSyncMeta struct from the bytes returned by getZkSyncMetaBytes(). However, the fields heapSize and auxHeapSize are not populated, so they default to 0. As the only field that is being used in the repo is gasPerPubdataByte, I am putting it as a Low.
For reference, the struct is:
