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Fix Output of LLM Chain (llmChain_0) must be LLM Chain, can't be an Output Prediction #3098

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Fix Output of LLM Chain (llmChain_0) must be LLM Chain, can't be an Output Prediction #3098

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14 changes: 14 additions & 0 deletions packages/server/src/utils/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -275,6 +275,20 @@ export const getEndingNodes = (
error = new InternalFlowiseError(StatusCodes.INTERNAL_SERVER_ERROR, `Ending node must be either a Chain or Agent or Engine`)
continue
}

if (
endingNodeData.outputs &&
Object.keys(endingNodeData.outputs).length &&
!Object.values(endingNodeData.outputs ?? {}).includes(endingNodeData.name)
) {
// The actual use case is that the Output of LLMChain is `Output Prediction`,
// which is not an EndingNode at this time.
error = new InternalFlowiseError(
StatusCodes.INTERNAL_SERVER_ERROR,
`Output of ${endingNodeData.label} (${endingNodeData.id}) must be ${endingNodeData.label}, can't be an Output Prediction`
)
continue
}
}
verifiedEndingNodes.push(endingNode)
}
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