Add ignores to ErrorHandler

SpigotCore_Main/src/de/steamwar/core/ErrorHandler.java

@@ -70,7 +70,7 @@ public class ErrorHandler extends Handler {
         if(logRecord.getThrown() != null)
             logRecord.getThrown().printStackTrace(new PrintStream(stacktraceOutput));
         String stacktrace = stacktraceOutput.toString();
-        if(stacktrace.contains("POI data mismatch"))
+        if(stacktrace.contains("POI data mismatch") || stacktrace.contains("Newer version! Server downgrades are not supported!"))
             return;
 
         if(message.isEmpty() && stacktrace.isEmpty())
@@ -144,6 +144,11 @@ public class ErrorHandler extends Handler {
         startsWith.add("1.16 and 1.16.1 clients are only partially supported");
         startsWith.add("Unable to parse CustomName from ");
         startsWith.add("java.util.ConcurrentModificationException");
+        startsWith.add("com.destroystokyo.paper.exception.ServerInternalException: Attempted to place a tile entity");
+        startsWith.add("World: minecraft:overworld");
+        startsWith.add("Chunk coordinates: ");
+        startsWith.add("Failed to save history");
+        startsWith.add("\t... ");
         ignoreStartsWith = Collections.unmodifiableList(startsWith);
 
         List<String> contains = new ArrayList<>();