René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug Report: Documentation Errors] Custom Web Widget - NoSuchKey error","articleBody":"### 🐛 Describe the Bug\n\nI uploaded this [dist.zip](https://github.com/user-attachments/files/24601817/dist.zip) on marketplace app web widget module. But when I use the widget the Web Widget Settings shows up and stuck on loading. Then I check the console log and got this 404 error then on the response I got this NoSuchKey error. There is no information on the documentation on how or why this error happens and how to fix this.\n\nThis is the [link](https://plugins.leadconnectorhq.com/69633fa33074e7548d040ec5/01KENV5DWT3NH2TV39NRMC3JDS/6966c884477c754b306a5e35) that got the error.\n\n\u003cimg width=\"739\" height=\"80\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/7c76e6b2-2aa4-40a4-88ce-9e6766f745fc\" /\u003e\n\n\u003cimg width=\"900\" height=\"196\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/835abb02-8672-496e-918b-408fe70c198c\" /\u003e\n\n\n### 📍 API Endpoint\n\nhttps://plugins.leadconnectorhq.com/69633fa33074e7548d040ec5/01KENV5DWT3NH2TV39NRMC3JDS/6966c884477c754b306a5e35\n\n### ✅ Expected Behavior\n\nWhen accessing the widget hosting URL with a trailing slash (e.g., .../version-id/), the platform should:\n\nServe the index.html file with Content-Type: text/html\nRender the HTML content in the iframe\nLoad external assets (CSS/JS) from the ./assets/ directory\nDisplay the widget configuration interface to the user\nThe widget iframe should load successfully and display the configuration UI, allowing users to interact with widget settings.\n\n### 💻 Screenshots or Code Samples\n\n_No response_\n\n### Product Area\n\nmarketplace-modules\n\n### 📋 Use Case\n\nI'm developing a custom web widget for the HighLevel App Marketplace following the official developer documentation:\n\nDocumentation: [https://help.gohighlevel.com/support/solutions/articles/155000003915](https://help.gohighlevel.com/support/solutions/articles/155000003915)\nWidget Type: Title Widget (allows users to customize page titles in funnel builder) (This is just for my testing)\nTechnology Stack: React + Vite + TypeScript + Postmate (for iframe communication)\n\n**Project Structure:**\n{\n  \"name\": \"main-title-widget\",\n  \"dependencies\": {\n    \"postmate\": \"^1.5.2\",\n    \"react\": \"^19.1.1\",\n    \"react-dom\": \"^19.1.1\",\n    \"tailwindcss\": \"^4.1.13\"\n  }\n}\n\n**Build Output** (dist folder)\ndist/\n├── index.html (406 bytes - references external assets)\n├── assets/\n│   ├── index-DIBb9ILI.css (4.5KB)\n│   └── index-DnvY7fUP.js (192KB)\n└── vite.svg\n\n**index.html structure:**\n```\n\u003c!DOCTYPE html\u003e\n\u003chtml lang=\"en\"\u003e\n  \u003chead\u003e\n    \u003cmeta charset=\"UTF-8\" /\u003e\n    \u003clink rel=\"stylesheet\" crossorigin href=\"./assets/index-DIBb9ILI.css\"\u003e\n    \u003cscript type=\"module\" crossorigin src=\"./assets/index-DnvY7fUP.js\"\u003e\u003c/script\u003e\n  \u003c/head\u003e\n  \u003cbody\u003e\n    \u003cdiv id=\"root\"\u003e\u003c/div\u003e\n  \u003c/body\u003e\n\u003c/html\u003e\n```\n\n### 🚨 Why Should This Be Prioritized?\n\nCRITICAL - Blocks App Marketplace Launch\n\nComplete Feature Failure: The widget is completely non-functional. Users cannot configure or use the widget at all.\n\nAffects All Future Widget Developers: This bug will impact any developer trying to build web widgets following the official documentation. It creates a broken developer experience.\n\n### 🧠 Additional Context\n\nWhat I've Already Tried:\n✅ Inline all CSS/JS into HTML - Still served as application/octet-stream\n✅ External assets with proper relative paths - Same issue\n✅ Verified ZIP structure - Files at root level, not nested in folders\n✅ Tested with different file sizes - 406 bytes (external) and 197KB (inline)\n✅ Checked HTML encoding - No BOM, proper UTF-8\n✅ Multiple re-uploads - Issue persists across uploads\n✅ Reinstalled app - No change\nTechnical Investigation:\nTesting URLs:\n\n# Without trailing slash - Returns noSuchKey\nhttps://plugins.leadconnectorhq.com/69633fa33074e7548d040ec5/01KENV5DWT3NH2TV39NRMC3JDS/6966c884477c754b306a5e35\n\n# With trailing slash - Returns 200 but wrong Content-Type\nhttps://plugins.leadconnectorhq.com/69633fa33074e7548d040ec5/01KENV5DWT3NH2TV39NRMC3JDS/6966c884477c754b306a5e35/\n- Response: Content-Type: application/octet-stream ❌\n- File gets download without extension\n\n# Direct file access - Returns noSuchKey\nhttps://plugins.leadconnectorhq.com/69633fa33074e7548d040ec5/01KENV5DWT3NH2TV39NRMC3JDS/6966c884477c754b306a5e35/index.html","author":{"url":"https://github.com/jerickbaetiong","@type":"Person","name":"jerickbaetiong"},"datePublished":"2026-01-13T23:54:39.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/232/highlevel-api-docs/issues/232"}