fixed missing client side server references. fixes #311

src/main/java/carpet/commands/SpawnCommand.java

@@ -16,6 +16,7 @@ import net.minecraft.command.arguments.DimensionArgumentType;
 import net.minecraft.entity.EntityCategory;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.server.command.ServerCommandSource;
+import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.util.DyeColor;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.dimension.DimensionType;
@@ -195,7 +196,7 @@ public class SpawnCommand
         TickSpeed.tickrate_advance(null, 0, null, null);
         // tick warp given player
         ServerCommandSource csource = null;
-        PlayerEntity player = null;
+        ServerPlayerEntity player = null;
         try
         {
             player = source.getPlayer();

src/main/java/carpet/commands/TickCommand.java

@@ -9,6 +9,7 @@ import com.mojang.brigadier.CommandDispatcher;
 import com.mojang.brigadier.builder.LiteralArgumentBuilder;
 import com.mojang.brigadier.exceptions.CommandSyntaxException;
 import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.text.BaseText;
 import net.minecraft.server.command.ServerCommandSource;
 
@@ -80,7 +81,7 @@ public class TickCommand
 
     private static int setWarp(ServerCommandSource source, int advance, String tail_command)
     {
-        PlayerEntity player = null;
+        ServerPlayerEntity player = null;
         try
         {
             player = source.getPlayer();