diff --git a/ecoscan_app/app/(tabs)/(scan)/index.tsx b/ecoscan_app/app/(tabs)/(scan)/index.tsx
index 84b372b0..0fac58e4 100644
--- a/ecoscan_app/app/(tabs)/(scan)/index.tsx
+++ b/ecoscan_app/app/(tabs)/(scan)/index.tsx
@@ -14,11 +14,11 @@ import { PageContainer } from "@/components/PageContainer";
 import { theme } from "@/theme";
 import { useRouter } from "expo-router";
 import { useAnalyzeProduct } from "@/hooks/useAnalyzeProduct";
-import { useError } from "@/context/ErrorContext";
+import { useSnackbar } from "@/context/SnackbarContext";
 
 export default function Scan() {
   const [barcode, setBarcode] = useState("");
-  const { setError } = useError();
+  const { showError } = useSnackbar();
   const router = useRouter();
   const { loading, analyzeProduct, cancelAnalysis } = useAnalyzeProduct();
   const [scanned, setScanned] = useState(false);
@@ -29,7 +29,7 @@ export default function Scan() {
     setScanned(true);
     const trimmed = code.trim();
     if (!trimmed) {
-      setError("Barcode darf nicht leer sein.");
+      showError("Barcode darf nicht leer sein.");
       return;
     }
     try {
@@ -40,12 +40,12 @@ export default function Scan() {
           params: { id: trimmed },
         });
       } else {
-        setError("Produkt konnte nicht analysiert werden.");
+        showError("Produkt konnte nicht analysiert werden.");
       }
     } catch (err) {
       const msg =
         err instanceof Error ? err.message : "Analyse fehlgeschlagen.";
-      setError(msg);
+      showError(msg);
     }
   };
 
diff --git a/ecoscan_app/components/product/ProductScreen.tsx b/ecoscan_app/components/product/ProductScreen.tsx
index c37bb443..20081d22 100644
--- a/ecoscan_app/components/product/ProductScreen.tsx
+++ b/ecoscan_app/components/product/ProductScreen.tsx
@@ -1,15 +1,15 @@
 import { PageContainer } from "@/components/PageContainer";
+import ProductCardSkeleton from "@/components/product/loading/ProductCardSkeleton";
+import ScoreDetailsSkeleton from "@/components/product/loading/ScoreDetailsSkeleton";
+import ProductScoreDashboard from "@/components/product/ProductScoreDashboard";
 import ProductCard from "@/components/product/sections/ProductCard";
+import ShareComponent from "@/components/product/ShareComponent";
+import { useSnackbar } from "@/context/SnackbarContext";
 import { useProductData } from "@/hooks/useProductData";
+import { useShareScreenshot } from "@/hooks/useShareScreenshot";
 import { router, useLocalSearchParams } from "expo-router";
 import React, { useEffect } from "react";
 import { ScrollView, StyleSheet, View } from "react-native";
-import { useError } from "@/context/ErrorContext";
-import { useShareScreenshot } from "@/hooks/useShareScreenshot";
-import ScoreDetailsSkeleton from "@/components/product/loading/ScoreDetailsSkeleton";
-import ProductCardSkeleton from "@/components/product/loading/ProductCardSkeleton";
-import ProductScoreDashboard from "@/components/product/ProductScoreDashboard";
-import ShareComponent from "@/components/product/ShareComponent";
 
 type ProductScreenProps = {
   showActionButtons?: boolean;
@@ -19,21 +19,20 @@ export default function ProductScreen({
   showActionButtons = true,
 }: ProductScreenProps) {
   const { viewRef, captureAndShare } = useShareScreenshot();
-
-  const { setError } = useError();
+  const { showError } = useSnackbar();
   const { id } = useLocalSearchParams();
   const { product, productLoading, scoreLoading, error } = useProductData(id);
 
   useEffect(() => {
     if (!error) return;
 
-    setError(error);
+    showError(error);
     if (router.canGoBack()) {
       router.back();
     } else {
       router.replace("/(tabs)/(scan)");
     }
-  }, [error, setError]);
+  }, [error, showError]);
 
   return (
     <View style={styles.root}>
diff --git a/ecoscan_app/context/ErrorContext.tsx b/ecoscan_app/context/ErrorContext.tsx
deleted file mode 100644
index 95ac1588..00000000
--- a/ecoscan_app/context/ErrorContext.tsx
+++ /dev/null
@@ -1,15 +0,0 @@
-import { useCallback } from "react";
-import { useSnackbar } from "@/context/SnackbarContext";
-
-export function useError() {
-  const { showError } = useSnackbar();
-
-  const setError = useCallback(
-    (msg: string, duration?: number) => {
-      showError(msg, duration ?? 5000);
-    },
-    [showError],
-  );
-
-  return { setError };
-}
diff --git a/ecoscan_app/hooks/useShareScreenshot.ts b/ecoscan_app/hooks/useShareScreenshot.ts
index 26730341..05a990cc 100644
--- a/ecoscan_app/hooks/useShareScreenshot.ts
+++ b/ecoscan_app/hooks/useShareScreenshot.ts
@@ -1,9 +1,9 @@
+import { useSnackbar } from "@/context/SnackbarContext";
+import { File } from "expo-file-system";
+import * as Sharing from "expo-sharing";
 import { useRef, useState } from "react";
 import { View } from "react-native";
 import { captureRef } from "react-native-view-shot";
-import { useSnackbar } from "@/context/SnackbarContext";
-import * as Sharing from "expo-sharing";
-import { File } from "expo-file-system";
 
 interface ShareOptions {
   format?: "png" | "jpg" | "webm";
@@ -48,9 +48,9 @@ export function useShareScreenshot({
     } finally {
       if (localUri) {
         try {
-          const fileInfo = await FileSystem.getInfoAsync(localUri);
-          if (fileInfo.exists) {
-            await FileSystem.deleteAsync(localUri);
+          const tempFile = new File(localUri);
+          if (tempFile.exists) {
+            tempFile.delete();
           }
         } catch (cleanupError) {
           console.warn(