diff --git a/lib/protobuf-decoder/protobufDecoder.js b/lib/protobuf-decoder/protobufDecoder.js
index e8ad50e..f13a1e6 100644
--- a/lib/protobuf-decoder/protobufDecoder.js
+++ b/lib/protobuf-decoder/protobufDecoder.js
@@ -46,9 +46,9 @@ export class BufferReader {
         if (length > bytesAvailable) {
             throw new Error(
                 "Not enough bytes left. Requested: " +
-                    length +
-                    " left: " +
-                    bytesAvailable,
+                length +
+                " left: " +
+                bytesAvailable,
             );
         }
     }
@@ -107,7 +107,7 @@ export function decodeProto(buffer) {
         }
     } catch (err) {
         reader.resetToCheckpoint();
-        console.log(err);
+        console.log(`ERR: ${err}`);
     }
 
     return {
diff --git a/page/index.js b/page/index.js
index 07fe98f..ba9b784 100644
--- a/page/index.js
+++ b/page/index.js
@@ -22,7 +22,7 @@ Page(
                     this.initPage();
                 })
                 .catch((x) => {
-                    console.log(`Init failed: ${x}`);
+                    console.log(`ERR: Init failed - ${x}`);
                     try {
                         let localStorage = new LocalStorage();
                         app._options.globalData.TOTPS = JSON.parse(
diff --git a/setting/index.js b/setting/index.js
index cadbeb8..e0b5606 100644
--- a/setting/index.js
+++ b/setting/index.js
@@ -33,7 +33,7 @@ AppSettingsPage({
             onChange: (changes) => {
                 let link = getTOTPByLink(changes);
                 if (link == null) {
-                    console.log("link is invalid");
+                    console.log("ERR: link is invalid");
                     return;
                 }
 
@@ -144,7 +144,7 @@ function GetTOTPList(storage) {
                     storage[elementId] = link;
                     updateStorage(storage);
                 } catch (err) {
-                    console.log(err);
+                    console.log(`ERR: ${err}`);
                 }
             },
             labelStyle: {
diff --git a/setting/utils/queryParser.js b/setting/utils/queryParser.js
index 1c7fc13..c738f4c 100644
--- a/setting/utils/queryParser.js
+++ b/setting/utils/queryParser.js
@@ -56,7 +56,7 @@ function getByOtpauthScheme(link) {
             getHashType(algorithm),
         );
     } catch (err) {
-        console.log(err);
+        console.log(`ERR: ${err}`);
         return null;
     }
 }