Environment

• OS: macOS
• Using requirements.txt for Python dependencies
• Project structure includes main.py and requirements.txt

Description

The mcp__code-sandbox__run_project tool fails when attempting to execute Python projects that use requirements.txt. The error is simply reported as "undefined" without any additional details, making
debugging difficult.

Steps to Reproduce

1. Create a Python project with main.py and requirements.txt
2. Add dependencies to requirements.txt (e.g., requests==2.31.0)
3. Try to run the project using:
   mcp__code-sandbox__run_project
   projectDir: /path/to/project
   language: python
   entrypointCmd: python main.py

Expected Behavior

The sandbox should successfully:

1. Create a Docker container
2. Install dependencies using uv (from requirements.txt)
3. Execute the Python script
4. Return the resource URI of the container logs

Actual Behavior

The tool fails with the error: "Error calling tool run_project: undefined"