{"record":{"id":"e05c7be0811c2fc1","repo":"earendil-works/pi","slug":"persisted-session-is-missing-a-session-file","errorCode":null,"errorMessage":"Persisted session is missing a session file","messagePattern":"Persisted session is missing a session file","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/coding-agent/src/core/agent-session-runtime.ts","lineNumber":293,"sourceCode":"\t\tif (!selectedEntry) {\n\t\t\tthrow new Error(\"Invalid entry ID for forking\");\n\t\t}\n\n\t\tif (position === \"at\") {\n\t\t\ttargetLeafId = selectedEntry.id;\n\t\t} else {\n\t\t\tif (selectedEntry.type !== \"message\" || selectedEntry.message.role !== \"user\") {\n\t\t\t\tthrow new Error(\"Invalid entry ID for forking\");\n\t\t\t}\n\t\t\ttargetLeafId = selectedEntry.parentId;\n\t\t\tselectedText = extractUserMessageText(selectedEntry.message.content);\n\t\t}\n\n\t\tconst previousSessionFile = this.session.sessionFile;\n\t\tif (this.session.sessionManager.isPersisted()) {\n\t\t\tconst currentSessionFile = this.session.sessionFile;\n\t\t\tif (!currentSessionFile) {\n\t\t\t\tthrow new Error(\"Persisted session is missing a session file\");\n\t\t\t}\n\t\t\tconst sessionDir = this.session.sessionManager.getSessionDir();\n\t\t\tif (!targetLeafId) {\n\t\t\t\tconst sessionManager = SessionManager.create(this.cwd, sessionDir);\n\t\t\t\tsessionManager.newSession({ parentSession: currentSessionFile });\n\t\t\t\tawait this.teardownCurrent(\"fork\", sessionManager.getSessionFile());\n\t\t\t\tthis.apply(\n\t\t\t\t\tawait this.createRuntime({\n\t\t\t\t\t\tcwd: this.cwd,\n\t\t\t\t\t\tagentDir: this.services.agentDir,\n\t\t\t\t\t\tsessionManager,\n\t\t\t\t\t\tsessionStartEvent: { type: \"session_start\", reason: \"fork\", previousSessionFile },\n\t\t\t\t\t}),\n\t\t\t\t);\n\t\t\t\tawait this.finishSessionReplacement(options?.withSession);\n\t\t\t\treturn { cancelled: false, selectedText };\n\t\t\t}\n","sourceCodeStart":275,"sourceCodeEnd":311,"githubUrl":"https://github.com/earendil-works/pi/blob/4af9d21d3b4d664e4a29fcabfec85171077248e3/packages/coding-agent/src/core/agent-session-runtime.ts#L275-L311","documentation":"Error \"Persisted session is missing a session file\" thrown in earendil-works/pi.","triggerScenarios":"Thrown at packages/coding-agent/src/core/agent-session-runtime.ts:293 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":"4af9d21d3b4d664e4a29fcabfec85171077248e3","analyzedAt":"2026-08-24T13:07:14.692Z","schemaVersion":2},"datasetVersion":"2026-08-24T17:17:21.512Z"}