I'm getting the following error when calling a lambda function through AppSync GraphQL:
{
"data": null,
"errors": [
{
"path": null,
"locations": [{ "line": 2, "column": 3, "sourceName": null }],
"message": "Validation error of type SubSelectionNotAllowed: Sub selection not allowed on leaf type String of field sendSignatureRequest @ 'sendSignatureRequest'"
}
]
}
I haven't seen this error before. Where should I be looking to fix it?