iisnode encountered an error when processing the request.

HRESULT: 0x2
HTTP status: 500
HTTP subStatus: 1002
HTTP reason: Internal Server Error

You are receiving this HTTP 200 response because system.webServer/iisnode/@devErrorsEnabled configuration setting is 'true'.

In addition to the log of stdout and stderr of the node.exe process, consider using debugging and ETW traces to further diagnose the problem.

The last 64k of the output generated by the node.exe process to stderr is shown below:

(node:7248) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
⚠️ LibreOffice not found in PATH. DOCX to PDF conversion will not work.
Please install LibreOffice to enable document conversion:
- Windows: Download from https://www.libreoffice.org/download/
- Linux: sudo apt install libreoffice
- macOS: brew install libreoffice
[x1B][31m[Nest] 7248  - [x1B][39m10/26/2025, 9:08:45 PM [x1B][31m  ERROR[x1B][39m [x1B][38;5;3m[TypeOrmModule] [x1B][39m[x1B][31mUnable to connect to the database. Retrying (1)...[x1B][39m
ConnectionError: Failed to connect to 117.4.176.174:1683 - Could not connect (sequence)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\mssql\lib\tedious\connection-pool.js:85:17
    at Connection.onConnect (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1012:9)
    at Object.onceWrapper (node:events:639:26)
    at Connection.emit (node:events:524:28)
    at Connection.emit (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1040:18)
    at Connection.socketError (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1395:12)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1176:14
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
[x1B][31m[Nest] 7248  - [x1B][39m10/26/2025, 9:09:09 PM [x1B][31m  ERROR[x1B][39m [x1B][38;5;3m[TypeOrmModule] [x1B][39m[x1B][31mUnable to connect to the database. Retrying (2)...[x1B][39m
ConnectionError: Failed to connect to 117.4.176.174:1683 - Could not connect (sequence)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\mssql\lib\tedious\connection-pool.js:85:17
    at Connection.onConnect (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1012:9)
    at Object.onceWrapper (node:events:639:26)
    at Connection.emit (node:events:524:28)
    at Connection.emit (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1040:18)
    at Connection.socketError (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1395:12)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1176:14
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
[x1B][31m[Nest] 7248  - [x1B][39m10/26/2025, 9:09:33 PM [x1B][31m  ERROR[x1B][39m [x1B][38;5;3m[TypeOrmModule] [x1B][39m[x1B][31mUnable to connect to the database. Retrying (3)...[x1B][39m
ConnectionError: Failed to connect to 117.4.176.174:1683 - Could not connect (sequence)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\mssql\lib\tedious\connection-pool.js:85:17
    at Connection.onConnect (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1012:9)
    at Object.onceWrapper (node:events:639:26)
    at Connection.emit (node:events:524:28)
    at Connection.emit (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1040:18)
    at Connection.socketError (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1395:12)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1176:14
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
[x1B][31m[Nest] 7248  - [x1B][39m10/26/2025, 9:09:57 PM [x1B][31m  ERROR[x1B][39m [x1B][38;5;3m[TypeOrmModule] [x1B][39m[x1B][31mUnable to connect to the database. Retrying (4)...[x1B][39m
ConnectionError: Failed to connect to 117.4.176.174:1683 - Could not connect (sequence)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\mssql\lib\tedious\connection-pool.js:85:17
    at Connection.onConnect (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1012:9)
    at Object.onceWrapper (node:events:639:26)
    at Connection.emit (node:events:524:28)
    at Connection.emit (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1040:18)
    at Connection.socketError (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1395:12)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1176:14
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
[x1B][31m[Nest] 7248  - [x1B][39m10/26/2025, 9:10:21 PM [x1B][31m  ERROR[x1B][39m [x1B][38;5;3m[TypeOrmModule] [x1B][39m[x1B][31mUnable to connect to the database. Retrying (5)...[x1B][39m
ConnectionError: Failed to connect to 117.4.176.174:1683 - Could not connect (sequence)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\mssql\lib\tedious\connection-pool.js:85:17
    at Connection.onConnect (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1012:9)
    at Object.onceWrapper (node:events:639:26)
    at Connection.emit (node:events:524:28)
    at Connection.emit (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1040:18)
    at Connection.socketError (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1395:12)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1176:14
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
[x1B][31m[Nest] 7248  - [x1B][39m10/26/2025, 9:10:45 PM [x1B][31m  ERROR[x1B][39m [x1B][38;5;3m[TypeOrmModule] [x1B][39m[x1B][31mUnable to connect to the database. Retrying (6)...[x1B][39m
ConnectionError: Failed to connect to 117.4.176.174:1683 - Could not connect (sequence)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\mssql\lib\tedious\connection-pool.js:85:17
    at Connection.onConnect (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1012:9)
    at Object.onceWrapper (node:events:639:26)
    at Connection.emit (node:events:524:28)
    at Connection.emit (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1040:18)
    at Connection.socketError (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1395:12)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1176:14
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
[x1B][31m[Nest] 7248  - [x1B][39m10/26/2025, 9:11:09 PM [x1B][31m  ERROR[x1B][39m [x1B][38;5;3m[TypeOrmModule] [x1B][39m[x1B][31mUnable to connect to the database. Retrying (7)...[x1B][39m
ConnectionError: Failed to connect to 117.4.176.174:1683 - Could not connect (sequence)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\mssql\lib\tedious\connection-pool.js:85:17
    at Connection.onConnect (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1012:9)
    at Object.onceWrapper (node:events:639:26)
    at Connection.emit (node:events:524:28)
    at Connection.emit (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1040:18)
    at Connection.socketError (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1395:12)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1176:14
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
[x1B][31m[Nest] 7248  - [x1B][39m10/26/2025, 9:11:33 PM [x1B][31m  ERROR[x1B][39m [x1B][38;5;3m[TypeOrmModule] [x1B][39m[x1B][31mUnable to connect to the database. Retrying (8)...[x1B][39m
ConnectionError: Failed to connect to 117.4.176.174:1683 - Could not connect (sequence)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\mssql\lib\tedious\connection-pool.js:85:17
    at Connection.onConnect (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1012:9)
    at Object.onceWrapper (node:events:639:26)
    at Connection.emit (node:events:524:28)
    at Connection.emit (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1040:18)
    at Connection.socketError (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1395:12)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1176:14
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
[x1B][31m[Nest] 7248  - [x1B][39m10/26/2025, 9:11:57 PM [x1B][31m  ERROR[x1B][39m [x1B][38;5;3m[TypeOrmModule] [x1B][39m[x1B][31mUnable to connect to the database. Retrying (9)...[x1B][39m
ConnectionError: Failed to connect to 117.4.176.174:1683 - Could not connect (sequence)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\mssql\lib\tedious\connection-pool.js:85:17
    at Connection.onConnect (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1012:9)
    at Object.onceWrapper (node:events:639:26)
    at Connection.emit (node:events:524:28)
    at Connection.emit (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1040:18)
    at Connection.socketError (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1395:12)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1176:14
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
[x1B][31m[Nest] 7248  - [x1B][39m10/26/2025, 9:12:21 PM [x1B][31m  ERROR[x1B][39m [x1B][38;5;3m[TypeOrmModule] [x1B][39m[x1B][31mUnable to connect to the database. Retrying (10)...[x1B][39m
ConnectionError: Failed to connect to 117.4.176.174:1683 - Could not connect (sequence)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\mssql\lib\tedious\connection-pool.js:85:17
    at Connection.onConnect (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1012:9)
    at Object.onceWrapper (node:events:639:26)
    at Connection.emit (node:events:524:28)
    at Connection.emit (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1040:18)
    at Connection.socketError (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1395:12)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1176:14
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
[x1B][31m[Nest] 7248  - [x1B][39m10/26/2025, 9:12:21 PM [x1B][31m  ERROR[x1B][39m [x1B][38;5;3m[ExceptionHandler] [x1B][39m[x1B][31mFailed to connect to 117.4.176.174:1683 - Could not connect (sequence)[x1B][39m
ConnectionError: Failed to connect to 117.4.176.174:1683 - Could not connect (sequence)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\mssql\lib\tedious\connection-pool.js:85:17
    at Connection.onConnect (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1012:9)
    at Object.onceWrapper (node:events:639:26)
    at Connection.emit (node:events:524:28)
    at Connection.emit (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1040:18)
    at Connection.socketError (D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1395:12)
    at D:\Inetpub\vhosts\caodangytb.edu.vn\lib.caodangytb.edu.vn\src\backend\node_modules\tedious\lib\connection.js:1176:14
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)