diff --git a/.gitignore b/.gitignore
index 8f71d00..c3df3dc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,7 @@ build/
 Pipfile.lock
 .mypy_cache/
 .vscode/
+.idea/
 .venv/
 *.code-workspace
 *.ini
diff --git a/pomice/events.py b/pomice/events.py
index 0dbe0b4..062c2e4 100644
--- a/pomice/events.py
+++ b/pomice/events.py
@@ -128,7 +128,6 @@ class TrackExceptionEvent(PomiceEvent):
 
     def __init__(self, data: dict, player: Player):
         self.player: Player = player
-        assert self.player._ending_track is not None
         self.track: Optional[Track] = self.player._ending_track
         # Error is for Lavalink <= 3.3
         self.exception: str = data.get(
diff --git a/pomice/pool.py b/pomice/pool.py
index 5ad8930..80e0eb8 100644
--- a/pomice/pool.py
+++ b/pomice/pool.py
@@ -545,11 +545,14 @@ class Node:
             path="decodetrack",
             query=f"encodedTrack={quote(identifier)}",
         )
+
+        track_info = data["info"] if self._version.major >= 4 else data
+
         return Track(
             track_id=identifier,
             ctx=ctx,
-            info=data,
-            track_type=TrackType(data["sourceName"]),
+            info=track_info,
+            track_type=TrackType(track_info["sourceName"]),
         )
 
     async def get_tracks(
@@ -730,7 +733,7 @@ class Node:
             )
 
         elif load_type in ("LOAD_FAILED", "error"):
-            exception = data["exception"]
+            exception = data["data"] if self._version.major >= 4 else data["exception"]
             raise TrackLoadError(
                 f"{exception['message']} [{exception['severity']}]",
             )