> papi i player
[03:06:05] [Server thread/INFO] [nucleus]: Server ran the command: /papi i player
[03:06:05] [Server thread/INFO]: ====================================
[03:06:05] [Server thread/INFO]: Error occurred while executing command: null
[03:06:05] [Server thread/ERROR] [Sponge]: Error occurred while executing command 'papi i player' for source DedicatedServer: null
java.lang.NullPointerException
        at java.lang.String.compareTo(Unknown Source) ~[?:1.8.0_112]
        at me.rojo8399.placeholderapi.commands.InfoCommand.lambda$formatExpansion$2(InfoCommand.java:43) ~[InfoCommand.class:?]
        at java.util.TimSort.countRunAndMakeAscending(Unknown Source) ~[?:1.8.0_112]
        at java.util.TimSort.sort(Unknown Source) ~[?:1.8.0_112]
        at java.util.Arrays.sort(Unknown Source) ~[?:1.8.0_112]
        at java.util.ArrayList.sort(Unknown Source) ~[?:1.8.0_112]
        at java.util.stream.SortedOps$RefSortingSink.end(Unknown Source) ~[?:1.8.0_112]
        at java.util.stream.Sink$ChainedReference.end(Unknown Source) ~[?:1.8.0_112]
        at java.util.stream.AbstractPipeline.copyIntoWithCancel(Unknown Source) ~[?:1.8.0_112]
        at java.util.stream.AbstractPipeline.copyInto(Unknown Source) ~[?:1.8.0_112]
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source) ~[?:1.8.0_112]
        at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source) ~[?:1.8.0_112]
        at java.util.stream.AbstractPipeline.evaluate(Unknown Source) ~[?:1.8.0_112]
        at java.util.stream.ReferencePipeline.collect(Unknown Source) ~[?:1.8.0_112]
        at me.rojo8399.placeholderapi.commands.InfoCommand.formatExpansion(InfoCommand.java:50) ~[InfoCommand.class:?]
        at me.rojo8399.placeholderapi.commands.InfoCommand.execute(InfoCommand.java:32) ~[InfoCommand.class:?]
        at org.spongepowered.api.command.args.ChildCommandElementExecutor.execute(ChildCommandElementExecutor.java:179) ~[ChildCommandElementExecutor.class:1.11.2-2227-6
.0.0-BETA-2148]
        at org.spongepowered.api.command.spec.CommandSpec.process(CommandSpec.java:351) ~[CommandSpec.class:1.11.2-2227-6.0.0-BETA-2148]
        at org.spongepowered.api.command.dispatcher.SimpleDispatcher.process(SimpleDispatcher.java:333) ~[SimpleDispatcher.class:1.11.2-2227-6.0.0-BETA-2148]
        at org.spongepowered.common.command.SpongeCommandManager.process(SpongeCommandManager.java:295) [SpongeCommandManager.class:1.11.2-2227-6.0.0-BETA-2148]
        at net.minecraft.command.ServerCommandManager.func_71556_a(SourceFile:1083) [bd.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71333_ah(DedicatedServer.java:420) [lh.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:385) [lh.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:624) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482) [MinecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_112]