{"record":{"id":"e535cadec27c7d6a","repo":"ScrapeGraphAI/Scrapegraph-ai","slug":"missing-required-key-e","errorCode":null,"errorMessage":"Missing required key: {e}","messagePattern":"Missing required key: (.+?)","errorType":"error_code","errorClass":"InvalidStateError","httpStatus":null,"severity":"error","filePath":"scrapegraphai/utils/code_error_analysis.py","lineNumber":333,"sourceCode":"\n        # Create prompt template and chain\n        prompt = PromptTemplate(\n            template=get_optimal_analysis_template(\"semantic\"),\n            input_variables=[\"generated_code\", \"differences\", \"explanation\"],\n        )\n        chain = prompt | llm_model | StrOutputParser()\n\n        # Execute chain with validated inputs\n        return chain.invoke(\n            {\n                \"generated_code\": validated_state.generated_code,\n                \"differences\": json.dumps(comparison_result[\"differences\"], indent=2),\n                \"explanation\": comparison_result[\"explanation\"],\n            }\n        )\n\n    except KeyError as e:\n        raise InvalidStateError(f\"Missing required key: {e}\")\n    except Exception as e:\n        raise AnalysisError(f\"Semantic analysis failed: {str(e)}\")\n","sourceCodeStart":315,"sourceCodeEnd":336,"githubUrl":"https://github.com/ScrapeGraphAI/Scrapegraph-ai/blob/532dfffbf6ee823a6c9cf8cfedc24a93bf026780/scrapegraphai/utils/code_error_analysis.py#L315-L336","documentation":"Raised by semantic_focused_analysis when a KeyError escapes during chain construction/invoke, i.e. a required key was missing from state or comparison_result despite the earlier targeted checks — the message names the offending key via str(e).","triggerScenarios":"semantic_comparison_loop where state lacks keys the semantic template consumes (generated_code, errors) or comparison_result values are accessed and missing; the KeyError message reveals exactly which key failed.","commonSituations":"Running the semantic comparison step standalone with a hand-built state; upstream node failure leaving state partially populated.","solutions":["Read the key name embedded in the message and add it to state","Pass the complete state from prior graph steps","Use state.get(...) defaults when constructing state manually"],"exampleFix":null,"handlingStrategy":"validation","validationCode":"for k in (\"generated_code\", \"errors\"):\n    assert k in state, f\"missing {k}\"","typeGuard":"def semantic_state_ok(s) -> bool:\n    return isinstance(s, dict) and \"generated_code\" in s and \"errors\" in s","tryCatchPattern":"from scrapegraphai.utils.code_error_analysis import InvalidStateError\ntry:\n    semantic_focused_analysis(state, comparison_result, llm_model)\nexcept InvalidStateError as e:\n    key = str(e).rsplit(\":\", 1)[-1].strip()\n    state.setdefault(key, \"\")\n    raise","preventionTips":["Forward the full state through the loop","Use state.get with defaults when building state manually","Check the key named in the message"],"tags":["state","keyerror","semantic-analysis"],"backgroundTag":"state-validation-failed","analyzedSha":"532dfffbf6ee823a6c9cf8cfedc24a93bf026780","analyzedAt":"2026-08-28T15:19:38.821Z","schemaVersion":2},"datasetVersion":"2026-08-28T16:17:29.566Z"}