fix: add 404 support

backend/main.py

@@ -13,6 +13,13 @@ from fastapi import FastAPI, Form
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.middleware.gzip import GZipMiddleware
 
+from fastapi.responses import PlainTextResponse
+from starlette.exceptions import HTTPException as StarletteHTTPException
+from fastapi.exception_handlers import (
+    http_exception_handler,
+    request_validation_exception_handler,
+)
+
 from fastapi.staticfiles import StaticFiles
 from pydantic import BaseModel
 from starlette.responses import FileResponse, HTMLResponse
@@ -52,6 +59,13 @@ def read_root():
     index_path = os.path.join('templates', 'index.html')
     return FileResponse(index_path)
 
+
+@app.exception_handler(StarletteHTTPException)
+async def custom_http_exception_handler(request, exc):
+    print(f"OMG! An HTTP error!: {repr(exc)}")
+    index_path = os.path.join('templates', '404.html')
+    return FileResponse(index_path)
+
 @app.post("/sim/current_gear")
 def simulate_current_gear(simcprofile: Annotated[str, Form()]):
 

frontend/src/app/ui/snippets/gear-parser.module.css

@@ -1,4 +1,5 @@
 .gearcontainer {
+    display: none;
     width: 100%;
     height: 100%;
     border: 1px solid;