Fantom: Fatal Error Unexpected Null

[rareweasel]

{
"data": {
"indexingStatusForCurrentVersion": {
"synced": true,
"health": "failed",
"fatalError": {
"message": "Mapping aborted at src/utils/transaction.ts, line 67, column 22, with message: unexpected null\twasm backtrace:\t 0: 0x355d - !src/utils/transaction/getOrCreateTransactionFromEvent\t 1: 0x36bb - !~lib/@graphprotocol/graph-ts/common/value/Value#toBytes\t 2: 0xba41 - !generated/schema/VaultUpdate#get:pricePerShare\t in handler handleTransfer at block #34272300 (0001774300000a9daca8481f10ace6b604e7cb38835cd7a6688d9372d979f751)",
"block": {
"number": "34272300",
"hash": "0x0001774300000a9daca8481f10ace6b604e7cb38835cd7a6688d9372d979f751"
},
"handler": null
},
"chains": [
{
"chainHeadBlock": {
"number": "34291121"
},
"latestBlock": {
"number": "34272300"
}
}
]
}
}
}