{"record":{"id":"a7c1225aa670addf","repo":"rohitg00/ai-engineering-from-scratch","slug":"unknown-event-type-etype","errorCode":null,"errorMessage":"unknown event type: {etype}","messagePattern":"unknown event type: (.+?)","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"phases/19-capstone-projects/20-agent-harness-loop-contract/code/main.py","lineNumber":182,"sourceCode":"        self._goal: str = \"\"\n        self._plan: list[Step] = []\n        self._cursor: int = 0\n        self._events: list[Event] = []\n        self._history: list[Step] = []\n        self._reason: str = \"\"\n        self._prev_state: State | None = None\n\n    @property\n    def events(self) -> list[Event]:\n        return list(self._events)\n\n    @property\n    def plan(self) -> list[Step]:\n        return list(self._plan)\n\n    def _emit(self, etype: str, payload: dict) -> None:\n        if etype not in EVENT_TYPES:\n            raise ValueError(f\"unknown event type: {etype}\")\n        self._events.append(Event(type=etype, payload=payload, ts=time.time()))\n\n    def _transition(self, target: State) -> None:\n        legal: dict[State, set[State]] = {\n            State.IDLE: {State.PLANNING},\n            State.PLANNING: {State.EXECUTING, State.IDLE, State.DONE},\n            State.EXECUTING: {State.AWAITING_TOOL, State.REFLECTING, State.IDLE},\n            State.AWAITING_TOOL: {State.REFLECTING, State.IDLE},\n            State.REFLECTING: {State.PLANNING, State.EXECUTING, State.DONE, State.IDLE},\n            State.DONE: set(),\n        }\n        if target not in legal[self.state]:\n            raise RuntimeError(f\"illegal transition {self.state.value} -> {target.value}\")\n        self.state = target\n\n    def _check_budget(self) -> PullRequest | None:\n        which = self.budget.exceeded()\n        if which is None:","sourceCodeStart":164,"sourceCodeEnd":200,"githubUrl":"https://github.com/rohitg00/ai-engineering-from-scratch/blob/39ea8a1c6d0b61f071226eff7ede4d4105fed820/phases/19-capstone-projects/20-agent-harness-loop-contract/code/main.py#L164-L200","documentation":"Error \"unknown event type: {etype}\" thrown in rohitg00/ai-engineering-from-scratch.","triggerScenarios":"Thrown at phases/19-capstone-projects/20-agent-harness-loop-contract/code/main.py:182 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"39ea8a1c6d0b61f071226eff7ede4d4105fed820","analyzedAt":"2026-08-26T03:13:46.626Z","schemaVersion":2},"datasetVersion":"2026-08-26T07:17:17.940Z"}