Fix PromptException

✅ Solution

PromptException in LlamaIndex often arises from incorrectly formatted prompts or missing required variables within your prompt templates, especially after upgrades. To fix it, carefully review your custom prompt templates, ensuring all variables are defined and the overall structure aligns with LlamaIndex's expected format; pay special attention to newer requirements introduced in updated versions like 0.14.x. Also check if you are passing all the necessary metadata and function definitions, if required by your specific use case or the updated version of LlamaIndex.