{"record":{"id":"3d84be50ecc5de68","repo":"NousResearch/hermes-agent","slug":"cannot-restore-an-empty-message","errorCode":null,"errorMessage":"Cannot restore an empty message.","messagePattern":"Cannot restore an empty message\\.","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"apps/desktop/src/app/session/hooks/use-prompt-actions/rewind.ts","lineNumber":316,"sourceCode":"export function planRestore(messages: ChatMessage[], messageId: string, target?: RestoreTarget): RestorePlan {\n  const idIndex = messages.findIndex(m => m.id === messageId && m.role === 'user')\n\n  const fallbackIndex =\n    target?.userOrdinal === null || target?.userOrdinal === undefined\n      ? -1\n      : visibleUserIndexAtOrdinal(messages, target.userOrdinal)\n\n  const sourceIndex = idIndex >= 0 ? idIndex : fallbackIndex\n  const source = messages[sourceIndex]\n\n  if (!source || source.role !== 'user') {\n    throw new Error('Could not find the message to restore.')\n  }\n\n  const text = (chatMessageText(source).trim() || target?.text?.trim() || '').trim()\n\n  if (!text) {\n    throw new Error('Cannot restore an empty message.')\n  }\n\n  const truncateOrdinal =\n    target?.userOrdinal === null || target?.userOrdinal === undefined\n      ? visibleUserOrdinal(messages, sourceIndex)\n      : target.userOrdinal\n\n  return { sourceIndex, text, truncateOrdinal, truncateMessageId: source.id, truncateRowId: source.rowId }\n}\n\n// ---------------------------------------------------------------------------\n// Edit (revert + resubmit with new text)\n// ---------------------------------------------------------------------------\n\nexport interface EditPlan {\n  editedMessage: ChatMessage\n  isFailedTurn: boolean\n  sourceIndex: number","sourceCodeStart":298,"sourceCodeEnd":334,"githubUrl":"https://github.com/NousResearch/hermes-agent/blob/c896c09c42910c584c4c7d2325b58c14713ea42c/apps/desktop/src/app/session/hooks/use-prompt-actions/rewind.ts#L298-L334","documentation":"Error \"Cannot restore an empty message.\" thrown in NousResearch/hermes-agent.","triggerScenarios":"Thrown at apps/desktop/src/app/session/hooks/use-prompt-actions/rewind.ts:316 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Choose a message that has text content to restore.","Edit the message content first, then restore."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"c896c09c42910c584c4c7d2325b58c14713ea42c","analyzedAt":"2026-08-14T17:18:01.089Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}