Connect was misplaced this should resolve the issue.

hidden1nin · hidden1nin · commit a5594c018749 · 2021-10-22T12:41:45.000-04:00
diff --git a/src/main/java/com/hiddentech/playerstorage/MongoPlayerData.java b/src/main/java/com/hiddentech/playerstorage/MongoPlayerData.java
@@ -34,12 +34,12 @@ public void save() {
         new BukkitRunnable() {
             @Override
             public void run() {
+                mongo.connect();
                 //delete if no data is unique
                 if(data.getBooleans().isEmpty()&&data.getInts().isEmpty()&&data.getStrings().isEmpty()){
                     mongo.getCollection().deleteOne(Filters.eq("uuid", uuid));
                     return;
                 }
-                mongo.connect();
                 mongo.getCollection().replaceOne(Filters.eq("uuid", uuid), document, new ReplaceOptions().upsert(true));
                 mongo.getClient().close();
             }

Original file line number	Diff line number	Diff line change
`@@ -34,12 +34,12 @@ public void save() {`
`34`	`34`	`new BukkitRunnable() {`
`35`	`35`	`@Override`
`36`	`36`	`public void run() {`
	`37`	`+ mongo.connect();`
`37`	`38`	`//delete if no data is unique`
`38`	`39`	`if(data.getBooleans().isEmpty()&&data.getInts().isEmpty()&&data.getStrings().isEmpty()){`
`39`	`40`	`mongo.getCollection().deleteOne(Filters.eq("uuid", uuid));`
`40`	`41`	`return;`
`41`	`42`	`}`
`42`		`- mongo.connect();`
`43`	`43`	`mongo.getCollection().replaceOne(Filters.eq("uuid", uuid), document, new ReplaceOptions().upsert(true));`
`44`	`44`	`mongo.getClient().close();`
`45`	`45`	`}`