diff --git a/invui-core/src/main/java/xyz/xenondevs/invui/item/builder/SkullBuilder.java b/invui-core/src/main/java/xyz/xenondevs/invui/item/builder/SkullBuilder.java
index 71447c4..40e43c4 100644
--- a/invui-core/src/main/java/xyz/xenondevs/invui/item/builder/SkullBuilder.java
+++ b/invui-core/src/main/java/xyz/xenondevs/invui/item/builder/SkullBuilder.java
@@ -17,7 +17,9 @@ import org.jetbrains.annotations.Nullable;
 import xyz.xenondevs.inventoryaccess.util.ReflectionRegistry;
 import xyz.xenondevs.inventoryaccess.util.ReflectionUtils;
 import xyz.xenondevs.invui.util.MojangApiUtils;
+import xyz.xenondevs.invui.util.MojangApiUtils.MojangApiException;
 
+import java.io.IOException;
 import java.io.Serializable;
 import java.util.UUID;
 import java.util.concurrent.ExecutionException;
@@ -31,8 +33,10 @@ public final class SkullBuilder extends AbstractItemBuilder<SkullBuilder> {
      * Create a {@link SkullBuilder} of a {@link Player Player's} {@link UUID}.
      *
      * @param uuid The {@link UUID} of the skull owner.
+     * @throws MojangApiException If the Mojang API returns an error.
+     * @throws IOException        If an I/O error occurs.
      */
-    public SkullBuilder(@NotNull UUID uuid) {
+    public SkullBuilder(@NotNull UUID uuid) throws MojangApiException, IOException {
         this(HeadTexture.of(uuid));
     }
     
@@ -40,8 +44,10 @@ public final class SkullBuilder extends AbstractItemBuilder<SkullBuilder> {
      * Create a {@link SkullBuilder} with the {@link Player Player's} username.
      *
      * @param username The username of the skull owner.
+     * @throws MojangApiException If the Mojang API returns an error.
+     * @throws IOException        If an I/O error occurs.
      */
-    public SkullBuilder(@NotNull String username) {
+    public SkullBuilder(@NotNull String username) throws MojangApiException, IOException {
         this(HeadTexture.of(username));
     }
     
@@ -128,9 +134,11 @@ public final class SkullBuilder extends AbstractItemBuilder<SkullBuilder> {
          *
          * @param offlinePlayer The skull owner.
          * @return The {@link HeadTexture} of that player.
+         * @throws MojangApiException If the Mojang API returns an error.
+         * @throws IOException        If an I/O error occurs.
          * @see HeadTexture#of(UUID)
          */
-        public static HeadTexture of(@NotNull OfflinePlayer offlinePlayer) {
+        public static @NotNull HeadTexture of(@NotNull OfflinePlayer offlinePlayer) throws MojangApiException, IOException {
             return of(offlinePlayer.getUniqueId());
         }
         
@@ -144,20 +152,28 @@ public final class SkullBuilder extends AbstractItemBuilder<SkullBuilder> {
          *
          * @param playerName The username of the player.
          * @return The {@link HeadTexture} of that player.
+         * @throws MojangApiException If the Mojang API returns an error.
+         * @throws IOException        If an I/O error occurs.
          * @see HeadTexture#of(UUID)
          */
         @SuppressWarnings("deprecation")
-        public static HeadTexture of(@NotNull String playerName) {
+        public static @NotNull HeadTexture of(@NotNull String playerName) throws MojangApiException, IOException {
             if (Bukkit.getServer().getOnlineMode()) {
                 // if the server is in online mode, the Minecraft UUID cache (usercache.json) can be used
                 return of(Bukkit.getOfflinePlayer(playerName).getUniqueId());
             } else {
                 // the server isn't in online mode - the UUID has to be retrieved from the Mojang API
                 try {
-                    return of(uuidCache.get(playerName, () -> MojangApiUtils.getCurrentUUID(playerName)));
+                    return of(uuidCache.get(playerName, () -> MojangApiUtils.getCurrentUuid(playerName)));
                 } catch (ExecutionException e) {
-                    e.printStackTrace();
-                    return null;
+                    Throwable cause = e.getCause();
+                    if (cause instanceof MojangApiException) {
+                        throw (MojangApiException) cause;
+                    } else if (cause instanceof IOException) {
+                        throw (IOException) cause;
+                    } else {
+                        throw new RuntimeException(cause);
+                    }
                 }
             }
         }
@@ -169,13 +185,21 @@ public final class SkullBuilder extends AbstractItemBuilder<SkullBuilder> {
          *
          * @param uuid The {@link UUID} of the skull owner.
          * @return The {@link HeadTexture} of that player.
+         * @throws MojangApiException If the Mojang API returns an error.
+         * @throws IOException        If an I/O error occurs.
          */
-        public static HeadTexture of(@NotNull UUID uuid) {
+        public static @NotNull HeadTexture of(@NotNull UUID uuid) throws MojangApiException, IOException {
             try {
                 return new HeadTexture(textureCache.get(uuid, () -> MojangApiUtils.getSkinData(uuid, false)[0]));
             } catch (ExecutionException e) {
-                e.printStackTrace();
-                return null;
+                Throwable cause = e.getCause();
+                if (cause instanceof MojangApiException) {
+                    throw (MojangApiException) cause;
+                } else if (cause instanceof IOException) {
+                    throw (IOException) cause;
+                } else {
+                    throw new RuntimeException(cause);
+                }
             }
         }
         
diff --git a/invui-core/src/main/java/xyz/xenondevs/invui/util/MojangApiUtils.java b/invui-core/src/main/java/xyz/xenondevs/invui/util/MojangApiUtils.java
index 0588b4b..055e65a 100644
--- a/invui-core/src/main/java/xyz/xenondevs/invui/util/MojangApiUtils.java
+++ b/invui-core/src/main/java/xyz/xenondevs/invui/util/MojangApiUtils.java
@@ -10,13 +10,12 @@ import java.io.Reader;
 import java.net.URL;
 import java.util.UUID;
 
-@SuppressWarnings("deprecation")
 public class MojangApiUtils {
     
     private static final String SKIN_DATA_URL = "https://sessionserver.mojang.com/session/minecraft/profile/%s?unsigned=%s";
     private static final String NAME_AT_TIME_URL = "https://api.mojang.com/users/profiles/minecraft/%s?at=%s";
     
-    public static String[] getSkinData(UUID uuid, boolean requestSignature) throws IOException {
+    public static String[] getSkinData(UUID uuid, boolean requestSignature) throws MojangApiException, IOException {
         String url = String.format(SKIN_DATA_URL, uuid, !requestSignature);
         Reader reader = new InputStreamReader(new URL(url).openConnection().getInputStream());
         JsonObject jsonObject = new JsonParser().parse(reader).getAsJsonObject();
@@ -33,11 +32,11 @@ public class MojangApiUtils {
         return null;
     }
     
-    public static UUID getCurrentUUID(String name) throws IOException {
+    public static UUID getCurrentUuid(String name) throws MojangApiException, IOException {
         return getUuidAtTime(name, System.currentTimeMillis() / 1000);
     }
     
-    public static UUID getUuidAtTime(String name, long timestamp) throws IOException {
+    public static UUID getUuidAtTime(String name, long timestamp) throws MojangApiException, IOException {
         String url = String.format(NAME_AT_TIME_URL, name, timestamp);
         Reader reader = new InputStreamReader(new URL(url).openConnection().getInputStream());
         JsonObject jsonObject = new JsonParser().parse(reader).getAsJsonObject();
@@ -56,17 +55,21 @@ public class MojangApiUtils {
     }
     
     private static void checkForError(JsonObject jsonObject) throws MojangApiException {
-        if (jsonObject.has("error") && jsonObject.has("errorMessage")) {
-            if (jsonObject.has("errorMessage"))
-                throw new MojangApiException(jsonObject.get("errorMessage").getAsString());
-            else throw new MojangApiException("");
-        }
+        if (jsonObject.has("error"))
+            throw new MojangApiException(jsonObject);
     }
     
-    public static class MojangApiException extends IOException {
+    public static class MojangApiException extends Exception {
         
-        public MojangApiException(String message) {
-            super(message);
+        private final JsonObject response;
+        
+        public MojangApiException(JsonObject response) {
+            super(response.has("errorMessage") ? response.get("errorMessage").getAsString() : "");
+            this.response = response;
+        }
+        
+        public JsonObject getResponse() {
+            return response;
         }
         
     }