{"record":{"id":"caa7af41c099c170","repo":"chenhg5/cc-connect","slug":"session-file-not-found-s-caa7af","errorCode":null,"errorMessage":"session file not found: %s","messagePattern":"session file not found: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"agent/gemini/gemini.go","lineNumber":244,"sourceCode":"\treturn newGeminiSession(ctx, cmd, extraArgs, workDir, model, mode, sessionID, extraEnv, timeout)\n}\n\n// ListSessions reads sessions from ~/.gemini/tmp/<project_hash>/chats/.\nfunc (a *Agent) ListSessions(_ context.Context) ([]core.AgentSessionInfo, error) {\n\treturn listGeminiSessions(a.workDir)\n}\n\nfunc (a *Agent) DeleteSession(_ context.Context, sessionID string) error {\n\thomeDir, err := os.UserHomeDir()\n\tif err != nil {\n\t\treturn fmt.Errorf(\"gemini: cannot determine home dir: %w\", err)\n\t}\n\tchatsDir := filepath.Join(homeDir, \".gemini\", \"tmp\", geminiProjectSlug(a.workDir), \"chats\")\n\t// Session files are named session-<timestamp>-<uuid_prefix>.json, not <uuid>.json.\n\t// Scan the directory to find the file containing the matching sessionId.\n\tentries, err := os.ReadDir(chatsDir)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"session file not found: %s\", sessionID)\n\t}\n\tfor _, entry := range entries {\n\t\tif entry.IsDir() || !strings.HasSuffix(entry.Name(), \".json\") {\n\t\t\tcontinue\n\t\t}\n\t\tfpath := filepath.Join(chatsDir, entry.Name())\n\t\tdata, err := os.ReadFile(fpath)\n\t\tif err != nil {\n\t\t\tcontinue\n\t\t}\n\t\tvar sf struct {\n\t\t\tSessionID string `json:\"sessionId\"`\n\t\t}\n\t\tif json.Unmarshal(data, &sf) == nil && sf.SessionID == sessionID {\n\t\t\treturn os.Remove(fpath)\n\t\t}\n\t}\n\treturn fmt.Errorf(\"session file not found: %s\", sessionID)","sourceCodeStart":226,"sourceCodeEnd":262,"githubUrl":"https://github.com/chenhg5/cc-connect/blob/4000b2338aa6e850c99df54f8b0ed6ed7460b401/agent/gemini/gemini.go#L226-L262","documentation":"DeleteSession reads the ~/.gemini/tmp/<slug>/chats directory to scan session files; if os.ReadDir fails (most commonly the directory doesn't exist), it reports `session file not found` for the requested sessionID. Note it conflates 'chats dir missing' with 'session missing'.","triggerScenarios":"Calling DeleteSession when the per-project chats directory does not exist (no sessions ever created for this workDir, wrong workDir configured, or the .gemini dir was deleted).","commonSituations":"Deleting a session after switching/misconfiguring workDir so the project slug no longer matches; gemini CLI never used in this project; user manually cleared ~/.gemini/tmp.","solutions":["Verify the agent's workDir matches the one used when the session was created","Run `gemini` once in the workDir to confirm the chats directory exists under ~/.gemini/tmp/<slug>/chats","List sessions first (ListSessions) and only delete IDs it returns","If the directory is missing, treat the session as already deleted"],"exampleFix":"// before: blind delete\ncleanup := func(id string) { _ = agent.DeleteSession(ctx, id) }\n// after: guard with a list\nsessions, err := agent.ListSessions(ctx)\nif err == nil {\n  for _, s := range sessions {\n    if s.ID == targetID { _ = agent.DeleteSession(ctx, targetID) }\n  }\n}","handlingStrategy":"validation","validationCode":"sessions, err := agent.ListSessions(ctx)\nif err != nil { return err }\nknown := map[string]bool{}\nfor _, s := range sessions { known[s.ID] = true }\nif !known[sessionID] { return fmt.Errorf(\"skip delete: %s not present\", sessionID) }","typeGuard":null,"tryCatchPattern":"if err := agent.DeleteSession(ctx, id); err != nil {\n  if strings.Contains(err.Error(), \"session file not found\") {\n    log.Println(\"already gone, treating as success\")\n  } else { return err }\n}","preventionTips":["Only delete IDs returned by ListSessions for the same workDir","Keep agent workDir config stable across restarts","Make cleanup code idempotent with respect to missing sessions"],"tags":["filesystem","session","gemini-agent"],"backgroundTag":"file-not-found","analyzedSha":"4000b2338aa6e850c99df54f8b0ed6ed7460b401","analyzedAt":"2026-09-06T11:45:09.575Z","contentChangedAt":"2026-09-06T11:45:09.575Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}