Cannot return null for non-nullable field Epoch.number.

[rdewildebd]

OS
Your OS: Ubuntu Noble

Versions
The db-sync version (eg cardano-db-sync --version): 13.7.2.1
PostgreSQL version: 17.9

Build/Install Method
The method you use to build or install cardano-db-sync: docker

Run method
The method you used to run cardano-db-sync (eg Nix/Docker/systemd/none): docker

Additional context
Add any other context about the problem here.

Problem Report
When running this query:

{
    "query": "query MyQuery ($whereEpochs: Epoch_bool_exp){epochs(where: $whereEpochs) {fees number output startedAt transactionsCount lastBlockTime } }",
    "variables": {
        "whereEpochs": {
        "number": {
            "_eq": 636
        }
    }
    }
}

I get an empty output + error:

{
    "data": {
        "epochs": [
            null
        ]
    },
    "errors": [
        {
            "message": "Cannot return null for non-nullable field Epoch.number.",
            "path": [
                "epochs",
                0,
                "number"
            ],
            "locations": [
                {
                    "line": 1,
                    "column": 80
                }
            ],
            "extensions": {
                "code": "INTERNAL_SERVER_ERROR",
                "exception": {
                    "stacktrace": [
                        "Error: Cannot return null for non-nullable field Epoch.number.",
                        "    at completeValue (/app/node_modules/graphql/execution/execute.js:560:13)",
                        "    at completeValueCatchingError (/app/node_modules/graphql/execution/execute.js:495:19)",
                        "    at resolveField (/app/node_modules/graphql/execution/execute.js:435:10)",
                        "    at executeFields (/app/node_modules/graphql/execution/execute.js:275:18)",
                        "    at collectAndExecuteSubfields (/app/node_modules/graphql/execution/execute.js:713:10)",
                        "    at completeObjectValue (/app/node_modules/graphql/execution/execute.js:703:10)",
                        "    at completeValue (/app/node_modules/graphql/execution/execute.js:591:12)",
                        "    at completeValueCatchingError (/app/node_modules/graphql/execution/execute.js:495:19)",
                        "    at /app/node_modules/graphql/execution/execute.js:618:25",
                        "    at Array.forEach (<anonymous>)"
                    ]
                }
            }
        }
    ]
}

I guess this is due to redesign of the epochs table, but that would mean it isn't backwards compatible?

number always seems to be null

[kderme]

This is not an sql query. Is this graphql? I need much more context or a simple sql query to understand what's the issue here.