Telegram Linking Error - Integration Service Not Available

**Title:** Telegram Linking Error - Integration Service Not Available

**Product:** Huly

**Component:** Integration - Telegram

**Version:** (Unidentified)

**Environment:**
Browser: Chrome, Edge and Brave
Operating System: Windows 11 Pro
URL's: https://huly.app/workbench//setting and https://telegram.huly.app/signin
User: Account "Huly" (jasp402 - jasp402@gmail.com).

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**Description of the Defect:**

The user is unable to link their Telegram account to the Huly platform through the Integrations section in the user settings. When attempting to link, the system remains in a "Connecting..." state indefinitely, without completing the process. Additionally, when accessing the Telegram integration service directly (https://telegram.huly.app/signin), a 502 Bad Gateway error is displayed, suggesting a problem on the server that manages the integration.

**Steps to Replicate:**

1. Log in to the "Huly" user account on the Huly platform.
2. Navigate to the "Settings" section of the user. (URL: https://huly.app/workbench//setting).
3. Select the "Integration" option.
4. In the Telegram section, click the "Add" button to start the linking process.
5. Enter a valid and working phone number in the corresponding field.
6. Click the "Next" button.

⚠️**Notice that the "Next" button changes to "Connecting...", but the linking process does not complete, even after a long wait time (greater than 10 minutes).**

**Current Result:**

Following the steps provided, you can see that:

When you click "Next", the button changes to "Connecting..." and remains in this state indefinitely.
There is no redirection or request for a verification code.
The Telegram integration is not activated.
The following error is logged in the browser console:
```js

Connect.svelte:64
POST https://telegram.huly.app/signin net::ERR_FAILED
26970.9015380….js:12

Uncaught (in promise) TypeError: Failed to fetch
at B (Connect.svelte:64:28)
at v (Connect.svelte:36:23)
at HTMLButtonElement.w (Connect.svelte:123:12)
at HTMLButtonElement.so (bundle.2ffc7d3c17743…0ce5.js:9863:129665)
When accessing https://telegram.huly.app/signin directly, an HTTP 502 Bad Gateway error is displayed, indicating a problem on the server.
Error Analysis (Potential Root Cause):
```

The **"502 Bad Gateway"** error when accessing https://telegram.huly.app/signin directly, along with the **"net::ERR_FAILED"** and **"Failed to fetch"** errors in the browser console when trying to link from **Huly**, clearly indicate a problem on the server side responsible for the Telegram integration.

*It is highly likely that:**

The "telegram.huly.app" service is down, down, or experiencing serious errors. The 502 Bad Gateway error is a direct indicator that the Nginx server managing this service is unable to communicate with the backend server (application) that should process Telegram linking requests.
There could be a network or infrastructure issue preventing communication between the Nginx server and the Telegram integration service backend.
Although less likely, there could be a problem in the configuration of the Nginx that manages the "telegram.huly.app" service, preventing requests from being correctly directed to the backend.
The "Failed to fetch" error in the browser is a consequence of the failure in the POST request to the /signin endpoint of the "telegram.huly.app" service. The browser is unable to get a response from the server, resulting in a network failure (net::ERR_FAILED) and an error when trying to process the response (Failed to fetch).

**Severity:**
Critical. The inability to link Telegram directly affects the integrations functionality, which could be a key or highly used feature by Huly users. A downed integration service creates a very negative user experience and can impact the credibility and reliability of the Huly platform.

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**evidence:**




Start at the Telegram linking request in Connect.svelte around line 64 and check the https://telegram.huly.app/signin service, including the reported 502 response. Done means the endpoint responds successfully, the linking flow leaves “Connecting...”, and Telegram activation completes.

Written by the indexing model from the issue text.