diff --git a/.gitignore b/.gitignore
index c73249e..04b8e10 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,7 +9,3 @@
 # Maven
 log/
 target/
-dependency-reduced-pom.xml
-
-# Java
-*.jar
diff --git a/pom.xml b/pom.xml
index 1289a90..c4f8351 100644
--- a/pom.xml
+++ b/pom.xml
@@ -143,7 +143,7 @@
         <dependency>
             <groupId>org.mongodb</groupId>
             <artifactId>mongodb-driver-async</artifactId>
-            <version>3.2.2</version>
+            <version>3.12.11</version>
         </dependency>
         <dependency>
             <groupId>fr.javatic.mongo</groupId>
diff --git a/src/main/java/net/frozenorb/apiv3/web/route/serverGroups/POSTServerGroups.java b/src/main/java/net/frozenorb/apiv3/web/route/serverGroups/POSTServerGroups.java
index 94c6522..d653b39 100644
--- a/src/main/java/net/frozenorb/apiv3/web/route/serverGroups/POSTServerGroups.java
+++ b/src/main/java/net/frozenorb/apiv3/web/route/serverGroups/POSTServerGroups.java
@@ -25,7 +25,7 @@ public final class POSTServerGroups implements Handler<RoutingContext> {
 		String image = requestBody.getString("image");
 
 		ServerGroup serverGroup = new ServerGroup(id, image);
-		SyncUtils.<Void>runBlocking(v -> serverGroup.insert(v));
+		SyncUtils.<Void>runBlocking(serverGroup::insert);
 
 		if (requestBody.containsKey("addedBy")) {
 			AuditLog.log(UuidUtils.parseUuid(requestBody.getString("addedBy")), requestBody.getString("addedByIp"), ctx, AuditLogActionType.SERVER_GROUP_CREATE, ImmutableMap.of("serverGroupId", id), (ignored, error) -> {
diff --git a/src/main/java/net/frozenorb/apiv3/web/route/servers/POSTServersHeartbeat.java b/src/main/java/net/frozenorb/apiv3/web/route/servers/POSTServersHeartbeat.java
index da01e65..556af74 100644
--- a/src/main/java/net/frozenorb/apiv3/web/route/servers/POSTServersHeartbeat.java
+++ b/src/main/java/net/frozenorb/apiv3/web/route/servers/POSTServersHeartbeat.java
@@ -48,6 +48,7 @@ public final class POSTServersHeartbeat implements Handler<RoutingContext> {
 
 		Server actorServer = Server.findById(actor.getName());
 		JsonObject requestBody = ctx.getBodyAsJson();
+		System.out.println("body: " + requestBody);
 		JsonObject players = requestBody.getJsonObject("players");
 		Map<UUID, String> playerNames = extractPlayerNames(players);
 		Map<UUID, String> playerIps = extractPlayerIps(players);
@@ -67,6 +68,7 @@ public final class POSTServersHeartbeat implements Handler<RoutingContext> {
 						"events", result.result().result(3)
 				));
 			} else {
+				result.cause().printStackTrace();
 				ErrorUtils.respondInternalError(ctx, result.cause());
 			}
 		});
@@ -75,14 +77,16 @@ public final class POSTServersHeartbeat implements Handler<RoutingContext> {
 	private Future<Void> createInfoResponse(Server server, double tps, Map<UUID, String> playerNames) {
 		Future<Void> callback = Future.future();
 
-		server.receivedHeartbeat(tps, playerNames.keySet());
-		server.save((ignored, error) -> {
-			if (error != null) {
-				callback.fail(error);
-			} else {
-				callback.complete();
-			}
-		});
+		if (server != null && playerNames != null) {
+			server.receivedHeartbeat(tps, playerNames.keySet());
+			server.save((ignored, error) -> {
+				if (error != null) {
+					callback.fail(error);
+				} else {
+					callback.complete();
+				}
+			});
+		}
 
 		return callback;
 	}