Skip to content

DIAGNOSTIC_REPORT.md

Latest commit

 

History

History
71 lines (58 loc) · 3.22 KB

DIAGNOSTIC_REPORT.md

File metadata and controls

71 lines (58 loc) · 3.22 KB

Diagnostic Report: Tool Names Error Investigation

Problem Statement

Even after removing tool_names from input_variables in ResumeIntelligenceAgent._get_prompt_template(), the error persists:

Agent analysis failed: Prompt missing required variables: {'tool_names'}

Investigation Findings

1. File Changes Verified ✅

  • File: Ai_powered_interview_coach/backend/app/services/agents/resume_agent_service.py
  • Line 92: input_variables=["input", "tools", "agent_scratchpad"] ✅ (NO tool_names)
  • Template: Does NOT reference {tool_names} ✅

2. Root Cause Identified 🔍

The error is NOT coming from ResumeIntelligenceAgent._get_prompt_template().

Found another location with the same issue:

  • File: Ai_powered_interview_coach/backend/app/services/agents/base_agent.py
  • Line 184: Template references {tool_names}
  • Line 200: input_variables includes "tool_names"

Problem: ResumeIntelligenceAgent OVERRIDES _get_prompt_template(), so it should NOT use the base class template. However, there might be an issue with how the agent is being initialized.

3. Execution Flow

  1. ResumeAgentService.analyze_resume() is called
  2. _execute_agent_analysis() creates ResumeIntelligenceAgent instance
  3. AgentExecutor.execute_with_fallback() is called
  4. BaseAgent.execute() is called
  5. initialize_agent() is called (if not already initialized)
  6. create_react_agent() is called with the prompt template
  7. ERROR OCCURS HERE - LangChain tries to format the prompt

4. Possible Causes

  1. Python bytecode cache - Old .pyc files being used (FIXED - cleared all pycache)
  2. Module import issue - Wrong version of the module being imported
  3. LangChain version issue - Different behavior in prompt formatting
  4. Initialization order - Agent being initialized before prompt template is ready

Actions Taken

  1. ✅ Removed tool_names from ResumeIntelligenceAgent._get_prompt_template() input_variables
  2. ✅ Cleared all Python pycache directories
  3. ✅ Restarted backend with fresh Python process
  4. ⏳ Ready for re-testing

Next Steps

  1. Upload a new resume
  2. Monitor backend logs for:
    • "Agent initialized with 6 tools" - means agent initialized successfully
    • "Agent analysis failed: Prompt missing required variables" - means error still occurs
    • Any other error messages

If Error Still Occurs

Check these locations for tool_names:

  • base_agent.py line 184 (template)
  • base_agent.py line 200 (input_variables)
  • study_plan_agent_service.py (different agent, might have same issue)
  • test_agent_base.py (test file, not production)

Hypothesis

The error might be coming from BaseAgent._get_prompt_template() being called instead of ResumeIntelligenceAgent._get_prompt_template(). This could happen if:

  1. The override isn't working properly
  2. There's a timing issue in initialization
  3. The agent is using the wrong class method

Solution if Error Persists

If the error still occurs after cache clearing and restart, we need to:

  1. Add debug logging to see which _get_prompt_template() is being called
  2. Check if ResumeIntelligenceAgent is properly inheriting from BaseAgent
  3. Verify the method override is working correctly