{"record":{"id":"e14537719474ac46","repo":"Tencent/WeKnora","slug":"failed-to-get-knowledge-base-v","errorCode":null,"errorMessage":"failed to get knowledge base: %v","messagePattern":"failed to get knowledge base: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/agent/tools/query_knowledge_graph.go","lineNumber":171,"sourceCode":"\tvar wg sync.WaitGroup\n\tvar mu sync.Mutex\n\tkbResults := make(map[string]*graphQueryResult)\n\n\tsearchParams := types.SearchParams{\n\t\tQueryText:  query,\n\t\tMatchCount: 10,\n\t}\n\n\tfor _, kbID := range input.KnowledgeBaseIDs {\n\t\twg.Add(1)\n\t\tgo func(id string) {\n\t\t\tdefer wg.Done()\n\n\t\t\t// Get knowledge base to check graph configuration\n\t\t\tkb, err := t.knowledgeService.GetKnowledgeBaseByIDOnly(ctx, id)\n\t\t\tif err != nil {\n\t\t\t\tmu.Lock()\n\t\t\t\tkbResults[id] = &graphQueryResult{kbID: id, err: fmt.Errorf(\"failed to get knowledge base: %v\", err)}\n\t\t\t\tmu.Unlock()\n\t\t\t\treturn\n\t\t\t}\n\n\t\t\t// Check if graph extraction is enabled\n\t\t\tif kb.ExtractConfig == nil || (len(kb.ExtractConfig.Nodes) == 0 && len(kb.ExtractConfig.Relations) == 0) {\n\t\t\t\tmu.Lock()\n\t\t\t\tkbResults[id] = &graphQueryResult{kbID: id, err: fmt.Errorf(\"graph extraction not configured\")}\n\t\t\t\tmu.Unlock()\n\t\t\t\treturn\n\t\t\t}\n\n\t\t\t// Query graph\n\t\t\tresults, err := t.knowledgeService.HybridSearch(ctx, id, searchParams)\n\t\t\tif err != nil {\n\t\t\t\tmu.Lock()\n\t\t\t\tkbResults[id] = &graphQueryResult{kbID: id, kb: kb, err: fmt.Errorf(\"query failed: %v\", err)}\n\t\t\t\tmu.Unlock()","sourceCodeStart":153,"sourceCodeEnd":189,"githubUrl":"https://github.com/Tencent/WeKnora/blob/988cbb03305e055d8ebb7d46d9ac6cc0803cd074/internal/agent/tools/query_knowledge_graph.go#L153-L189","documentation":"Graph query worker failed to load the knowledge base record by ID: GetKnowledgeBaseByIDOnly returned an error (storage failure or unknown ID), so graph configuration cannot be inspected and this KB's sub-query is recorded as failed without cancelling the other concurrent KB lookups.","triggerScenarios":"Thrown at internal/agent/tools/query_knowledge_graph.go:171 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Verify the knowledge_base_id is valid and exists","Check knowledge service/storage connectivity","Aggregate per-KB errors so one bad ID does not fail the entire graph query"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"988cbb03305e055d8ebb7d46d9ac6cc0803cd074","analyzedAt":"2026-09-02T14:41:08.344Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}