Path on ErrorVault — Developer Error Code Dictionary

Fix FileNotFoundError: Resolve Python's 'No such file or directory' exceptions

Sat, 04 Jul 2026 20:08:00 +0800

The FileNotFoundError is a common exception in Python, indicating that the operating system cannot find a file or directory at the specified path. This error is a subclass of OSError and IOError, specifically raised when an attempt to access a file or directory fails because it does not exist. Understanding its root causes and implementing robust path handling are crucial for writing reliable Python applications.

1. Symptoms: Clear description of indicators and shell output.

When a FileNotFoundError occurs, your Python script will terminate (unless handled) and display a traceback. The most prominent symptom is the error message itself, which typically includes the specific file or directory path that could not be found.

Fix clw-fs-invalid: Invalid Filesystem Configuration in OpenClaw

Thu, 14 May 2026 07:56:04 +0800

1. Symptoms

When the clw-fs-invalid error occurs, OpenClaw fails to parse your project configuration and terminates with a non-zero exit code. The error manifests with the following observable symptoms:

Primary Symptoms:

OpenClaw CLI returns exit code 42 upon execution
Error message displays the exact string: clw-fs-invalid: invalid filesystem path detected
The specific problematic path is printed in the console output

Secondary Symptoms:

Configuration validation fails during the init or build commands
Any subsequent operations dependent on filesystem paths are skipped
In verbose mode (-v flag), additional context shows which .clw file contains the invalid path

Example Error Output:

Fix clw-agent-not-found: Agent binary not found in OpenClaw

Tue, 12 May 2026 03:08:04 +0800

1. Symptoms

When the clw-agent-not-found error occurs, you’ll observe one or more of the following symptoms in your OpenClaw deployment:

Primary Error Message:

[ERROR] clw-agent-not-found: Could not locate clw-agent binary in system PATH or configured directory
---

**Additional Console Output:**
```bash
$ openclaw agent start
OpenClaw v2.4.1 - Initializing agent subsystem...
[ERROR] Agent binary not found at expected location: /usr/local/bin/clw-agent
[ERROR] Searched paths:
  - /usr/local/bin
  - /usr/bin
  - /opt/openclaw/bin
  - ~/.openclaw/agents/current
[ERROR] Exit code: 127

Application-Level Symptoms: