https://errorvault.dev/categories/machine-learning/Recent content in Machine Learning on ErrorVault — Developer Error Code DictionaryHugoen-usSun, 19 Apr 2026 19:19:13 +0800https://errorvault.dev/openclaw/openclaw-clw-prompt-failure-prompt-generation/Sun, 19 Apr 2026 19:19:13 +0800https://errorvault.dev/openclaw/openclaw-clw-prompt-failure-prompt-generation/<h2 id="1-symptoms">1. Symptoms</h2> <p>The <code>clw-prompt-failure</code> error in OpenClaw manifests during prompt processing in LLM inference pipelines. Users typically encounter it when initializing inference sessions or submitting prompts to models like Llama or Mistral via OpenClaw&rsquo;s API.</p> <h2 id="common-symptoms-include">Common symptoms include:</h2> <p>[ERROR] clw-prompt-failure: Prompt validation failed at stage &rsquo;tokenize&rsquo;. Reason: Invalid template syntax in prompt: missing closing brace in {{user_input}}.</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#282a36;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-fallback" data-lang="fallback"><span style="display:flex;"><span> </span></span><span style="display:flex;"><span>Or more detailed logs: </span></span></code></pre></div><p>[DEBUG] OpenClaw v2.1.3: Loading model &rsquo;llama-3-8b&rsquo;&hellip; [INFO] Model loaded successfully. [ERROR] clw-prompt-failure: Failed to generate prompt tokens. Details:</p>