diff --git a/backend/app/api/routes/printers.py b/backend/app/api/routes/printers.py
index 779fa8469..1db304b0d 100644
--- a/backend/app/api/routes/printers.py
+++ b/backend/app/api/routes/printers.py
@@ -672,10 +672,11 @@ async def get_printer_cover(
         # Extract thumbnail from 3MF (which is a ZIP file)
         try:
             zf = zipfile.ZipFile(temp_path, "r")
-        except zipfile.BadZipFile as e:
-            raise HTTPException(500, f"Downloaded file is not a valid 3MF/ZIP: {e}")
+        except zipfile.BadZipFile:
+            raise HTTPException(500, "Downloaded file is not a valid 3MF/ZIP archive")
         except Exception as e:
-            raise HTTPException(500, f"Failed to open 3MF file: {e}")
+            logger.error(f"Failed to open 3MF file: {e}", exc_info=True)
+            raise HTTPException(500, "Failed to open 3MF file. Check server logs for details.")
 
         try:
             # Try common thumbnail paths in 3MF files
diff --git a/backend/app/api/routes/settings.py b/backend/app/api/routes/settings.py
index 1f25269ad..132f52aae 100644
--- a/backend/app/api/routes/settings.py
+++ b/backend/app/api/routes/settings.py
@@ -413,10 +413,10 @@ async def restore_backup(
             }
 
         except Exception as e:
-            logger.error(f"Restore failed: {e}")
+            logger.error(f"Restore failed: {e}", exc_info=True)
             return JSONResponse(
                 status_code=500,
-                content={"success": False, "message": f"Restore failed: {str(e)}"},
+                content={"success": False, "message": "Restore failed. Check server logs for details."},
             )
 
 
@@ -592,9 +592,10 @@ async def update_virtual_printer_settings(
             content={"detail": str(e)},
         )
     except Exception as e:
+        logger.error(f"Failed to configure virtual printer: {e}", exc_info=True)
         return JSONResponse(
             status_code=500,
-            content={"detail": f"Failed to configure virtual printer: {e}"},
+            content={"detail": "Failed to configure virtual printer. Check server logs for details."},
         )
 
     return await get_virtual_printer_settings(db)
diff --git a/backend/app/api/routes/support.py b/backend/app/api/routes/support.py
index 0c7f57cc6..3c882e7de 100644
--- a/backend/app/api/routes/support.py
+++ b/backend/app/api/routes/support.py
@@ -308,8 +308,8 @@ async def clear_logs(
             logger.info("Log file cleared by user")
             return {"message": "Logs cleared successfully"}
         except Exception as e:
-            logger.error(f"Error clearing log file: {e}")
-            raise HTTPException(status_code=500, detail=f"Failed to clear logs: {e}")
+            logger.error(f"Error clearing log file: {e}", exc_info=True)
+            raise HTTPException(status_code=500, detail="Failed to clear logs. Check server logs for details.")
 
     return {"message": "Log file does not exist"}