diff --git a/src/main/java/me/kavin/piped/ServerLauncher.java b/src/main/java/me/kavin/piped/ServerLauncher.java
index 45f6ea4..21732ec 100644
--- a/src/main/java/me/kavin/piped/ServerLauncher.java
+++ b/src/main/java/me/kavin/piped/ServerLauncher.java
@@ -283,7 +283,7 @@ public class ServerLauncher extends MultithreadedHttpServerLauncher {
                     }
                 })).map(POST, "/user/playlists/create", AsyncServlet.ofBlocking(executor, request -> {
                     try {
-                        var name = Constants.mapper.readTree(request.loadBody().getResult().asArray()).get("name").asText();
+                        var name = Constants.mapper.readTree(request.loadBody().getResult().asArray()).get("name").textValue();
                         return getJsonResponse(ResponseHelper.createPlaylist(request.getHeader(AUTHORIZATION), name), "private");
                     } catch (Exception e) {
                         return getErrorResponse(e, request.getPath());
@@ -297,8 +297,8 @@ public class ServerLauncher extends MultithreadedHttpServerLauncher {
                 })).map(POST, "/user/playlists/add", AsyncServlet.ofBlocking(executor, request -> {
                     try {
                         var json = Constants.mapper.readTree(request.loadBody().getResult().asArray());
-                        var playlistId = json.get("playlistId").asText();
-                        var videoId = json.get("videoId").asText();
+                        var playlistId = json.get("playlistId").textValue();
+                        var videoId = json.get("videoId").textValue();
                         return getJsonResponse(ResponseHelper.addToPlaylistResponse(request.getHeader(AUTHORIZATION), playlistId, videoId), "private");
                     } catch (Exception e) {
                         return getErrorResponse(e, request.getPath());
@@ -306,8 +306,8 @@ public class ServerLauncher extends MultithreadedHttpServerLauncher {
                 })).map(POST, "/user/playlists/remove", AsyncServlet.ofBlocking(executor, request -> {
                     try {
                         var json = Constants.mapper.readTree(request.loadBody().getResult().asArray());
-                        var playlistId = json.get("playlistId").asText();
-                        var index = json.get("index").asInt();
+                        var playlistId = json.get("playlistId").textValue();
+                        var index = json.get("index").intValue();
                         return getJsonResponse(ResponseHelper.removeFromPlaylistResponse(request.getHeader(AUTHORIZATION), playlistId, index), "private");
                     } catch (Exception e) {
                         return getErrorResponse(e, request.getPath());
@@ -315,7 +315,7 @@ public class ServerLauncher extends MultithreadedHttpServerLauncher {
                 })).map(POST, "/user/playlists/delete", AsyncServlet.ofBlocking(executor, request -> {
                     try {
                         var json = Constants.mapper.readTree(request.loadBody().getResult().asArray());
-                        var playlistId = json.get("playlistId").asText();
+                        var playlistId = json.get("playlistId").textValue();
                         return getJsonResponse(ResponseHelper.deletePlaylistResponse(request.getHeader(AUTHORIZATION), playlistId), "private");
                     } catch (Exception e) {
                         return getErrorResponse(e, request.getPath());
diff --git a/src/main/java/me/kavin/piped/utils/resp/InvalidRequestResponse.java b/src/main/java/me/kavin/piped/utils/resp/InvalidRequestResponse.java
index e64852f..0a6ab77 100644
--- a/src/main/java/me/kavin/piped/utils/resp/InvalidRequestResponse.java
+++ b/src/main/java/me/kavin/piped/utils/resp/InvalidRequestResponse.java
@@ -2,6 +2,6 @@ package me.kavin.piped.utils.resp;
 
 public class InvalidRequestResponse {
 
-    public String message = "Invalid request sent.";
+    public String error = "Invalid request sent.";
 
 }