When using the Perplexity API, you may see a 401 error with the message “API Key Invalid.” This error means the server could not authenticate your request because the API key is missing, expired, or incorrect. The problem often occurs after regenerating a key, copying the key with extra whitespace, or using a key for … Read more
You open Perplexity to ask a question and see the message “Model Not Available.” This error prevents you from using the search or reasoning model you selected. The cause is usually a temporary server outage, an account plan restriction, or a misconfigured default model. This article explains why the error occurs and shows you how … Read more
When you hover over a numbered source link in a Perplexity answer, the popup may show “Citation Not Found” instead of the actual source title and URL. This happens when the source link is missing or broken in Perplexity’s internal database. The error can appear on any answer, especially for older threads or queries with … Read more
When you ask Perplexity to analyze or summarize a specific web page, you may see the error message “Page Cannot Be Fetched.” This error means Perplexity could not download the page content from the server. The cause is usually a restriction on the website side, a network issue, or a limitation in Perplexity’s crawling ability. … Read more
The “Search Region Not Supported” error in Perplexity prevents you from running searches or accessing the AI assistant. This error appears when the service detects your IP address or account region as unsupported. It can happen even if you have a valid subscription or are using a supported browser. This article explains the root cause … Read more
You tap on a specific thread in the Perplexity mobile app, and the app immediately closes or freezes. This crash happens only when you open that one conversation, while all other threads work normally. The root cause is often a corrupted data element within that thread, such as a malformed attachment or a broken rendering … Read more
When you tap the voice mode icon in Perplexity and see the error message “Voice Mode Cannot Start,” the app fails to capture or play audio. This error typically occurs because of permission conflicts, microphone hardware issues, or browser settings that block audio access. This article explains the root causes of the voice mode failure … Read more
The Discover Feed in Perplexity shows a curated list of trending topics and news. When it fails to load, you see a persistent error message instead of fresh content. This problem usually stems from network interruptions, browser cache conflicts, or account sync issues. This article explains the root causes of the Discover Feed loading failure … Read more
You open Perplexity in your browser and the extension icon is grayed out, or clicking it shows a blank popup instead of the search interface. This error usually occurs because the extension has lost its connection to the Perplexity servers or because a recent browser update has disabled it. In this article, you will learn … Read more
When you click the Save button on a Perplexity thread and see the error message “Cannot Save Thread” instead of a confirmation, your work is not automatically backed up. This error typically occurs because of temporary server-side storage failures, browser cache corruption, or an expired authentication token that prevents the thread metadata from being written … Read more