fix visu error api

backend/src/api/analysis_api.py

@@ -95,7 +95,7 @@ async def analysis_interface_hosts(
     try:
         rows = await db.infer_interface_hosts(since=since, limit_per_interface=limit_per_interface)
     except Exception as exc:
-        raise HTTPException(status_code=500, detail="Failed to infer interface host mapping") from exc
+        raise HTTPException(status_code=500, detail=f"Failed to infer interface host mapping: {exc}") from exc
 
     interfaces = [InterfaceAttachment(**row) for row in rows]
     return InterfaceHostAnalysisResponse(since=since, interfaces=interfaces)
@@ -138,7 +138,7 @@ async def analysis_interface_host_protocols(
             limit_protocols_per_host=limit_protocols_per_host,
         )
     except Exception as exc:
-        raise HTTPException(status_code=500, detail="Failed to infer interface host protocol mapping") from exc
+        raise HTTPException(status_code=500, detail=f"Failed to infer interface host protocol mapping: {exc}") from exc
 
     interfaces = [InterfaceProtocolAttachment(**row) for row in rows]
     return InterfaceHostProtocolAnalysisResponse(since=since, interfaces=interfaces)