Hotfix: Industrial-strength stability fixes for Windows Installer (v1.1.9)

Author: CalaKuad1

.github/workflows/release.yml

@@ -55,7 +55,20 @@ jobs:
       - name: Build Backend with PyInstaller
         run: |
           cd backend
-          pyinstaller --onefile --noconsole --collect-all uvicorn --collect-all fastapi api_server.py
+          pyinstaller --onefile --noconsole \
+            --collect-all uvicorn \
+            --collect-all fastapi \
+            --hidden-import=uvicorn.logging \
+            --hidden-import=uvicorn.loops \
+            --hidden-import=uvicorn.loops.auto \
+            --hidden-import=uvicorn.protocols \
+            --hidden-import=uvicorn.protocols.http \
+            --hidden-import=uvicorn.protocols.http.auto \
+            --hidden-import=uvicorn.protocols.websockets \
+            --hidden-import=uvicorn.protocols.websockets.auto \
+            --hidden-import=uvicorn.lifespan \
+            --hidden-import=uvicorn.lifespan.on \
+            api_server.py
           # Move binary to backend root so it's picked up by extraResources
           if [ "${{ matrix.os }}" = "windows-latest" ]; then
             mv dist/api_server.exe .

backend/api_server.py

@@ -1,14 +1,20 @@
+import os
+import sys
+import multiprocessing
+
+# --- CRITICAL: REDIRECT STREAMS IN FROZEN EXE ---
+# If running as a PyInstaller --noconsole EXE, stdout/stderr are None, which crashes many libraries.
+if getattr(sys, 'frozen', False) and sys.platform == "win32":
+    null_device = open(os.devnull, 'w')
+    sys.stdout = null_device
+    sys.stderr = null_device
+    # Also ensure freeze_support is called as early as possible
+    multiprocessing.freeze_support()
+
 import asyncio
 import collections
-import multiprocessing
 import threading
 from fastapi import FastAPI, WebSocket, WebSocketDisconnect, HTTPException, Request, Query
-from fastapi.middleware.cors import CORSMiddleware
-from pydantic import BaseModel
-from typing import Optional, List, Dict
-from fastapi import UploadFile, File
-import os
-import sys
 import json
 import logging
 from queue import Queue

changelog.txt

@@ -16,8 +16,8 @@
 - **Fixed backend restart loop on Windows** — Watchdog now correctly monitors the Electron process using a passed PID, preventing premature restarts during installations.
 - **Improved Java version mapping** — Version detection now correctly maps high-version servers (NeoForge/NeoMinecraft 26.x+) to **Java 25**.
 - **Fixed Startup Scripts (run.bat/run.sh)** — Implemented **Environment Injection** (JAVA_HOME & PATH) to force startup scripts to use the app's managed Java version instead of the system default.
-- **Fixed Portable Executable Stability** — Added `freeze_support()` and improved PyInstaller bundling to prevent the backend from crashing when running from the GitHub-generated `.exe`.
-- **Robust Forge version handling** — Versions like "26.1.1" now correctly trigger the Java 25 requirement.
+- **Fixed Portable Executable Stability** — Implemented **Industrial Strength** fixes including `stdout/stderr` redirection and extensive dependency bundling (uvicorn/fastapi) to prevent crashes in the installer version.
+- **Robust Forge version handling** — Versions like "26.1.1" now correctly trigger the Java 25 requirement and use the managed environment.
 
 ### 🔧 IMPROVEMENTS:
 - **Smart close behavior** — App checks for running servers before deciding to hide or quit