Fit FLUX hot swap within 16 GiB VRAM

router/ai_profile_router.py

@@ -719,8 +719,17 @@ class _RemoteWorker:
             headers["Content-Type"] = "application/json"
         req = urllib.request.Request(IMAGE_WORKER_URL + path, data=body,
                                      method=method, headers=headers)
-        with urllib.request.urlopen(req, timeout=timeout) as response:
-            return json.load(response)
+        try:
+            with urllib.request.urlopen(req, timeout=timeout) as response:
+                return json.load(response)
+        except urllib.error.HTTPError as exc:
+            try:
+                message = json.loads(exc.read(4096)).get("message")
+            except Exception:
+                message = None
+            raise RuntimeError(message or f"Bild-Worker HTTP {exc.code}") from exc
+        except (OSError, urllib.error.URLError, TimeoutError) as exc:
+            raise RuntimeError(f"Bild-Worker nicht erreichbar: {exc}") from exc
 
     def start(self) -> None:
         if not IMAGE_WORKER_TOKEN or len(IMAGE_WORKER_TOKEN) < 32: