Fix `Failed to transact block operations` error

[acuarica]

Some subgraphs are failing due to a Failed to transact block operations error. This happens in both mainnet and testnet. The errors are

"Failed to transact block operations: subgraph Qme8omvKLRiDcSGzHrDKSaVcABVQNpi3cPDF6Wd6UCSenWhas already processed block80632167; there are most likely two (or more) nodes indexing this subgraph"

and

"Failed to transact block operations: subgraph QmbYgWhN3FaM2YJPL997rGya11SKKv5VLT5skfeYTuAWhHhas already processed block20965534; there are most likely two (or more) nodes indexing this subgraph"

respectively.

Investigate with this happens and fix the error.