Um...

2018-01-24 10:49:23.226 [RequestBuffer Retry Handler] WARN  sx.blah.discord.Discord4J - RequestBuffer handled an uncaught exception!
java.lang.NullPointerException: null
2018-01-24 10:49:23.231 [RequestBuffer Retry Handler] ERROR sx.blah.discord.Discord4J - Discord4J Internal Exception
org.apache.http.client.ClientProtocolException: null
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:187)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
    at sx.blah.discord.api.internal.Requests$Request.request(Requests.java:297)
    at sx.blah.discord.api.internal.Requests$Request.request(Requests.java:263)
    at sx.blah.discord.api.internal.Requests$Request.makeRequest(Requests.java:252)
    at sx.blah.discord.handle.impl.obj.Channel.sendFiles(Channel.java:566)
    at sx.blah.discord.handle.impl.obj.Channel.sendFile(Channel.java:545)
    at sx.blah.discord.handle.impl.obj.Channel.sendFile(Channel.java:535)
    at com.github.vaerys.handlers.RequestHandler.lambda$sendFileURL$4(RequestHandler.java:189)
    at com.github.vaerys.handlers.RequestHandler$$Lambda$135/305756683.request(Unknown Source)
    at sx.blah.discord.util.RequestBuffer$RequestFuture$RequestCallable.call(RequestBuffer.java:288)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at sx.blah.discord.util.RequestBuffer$RequestFuture.run(RequestBuffer.java:261)
    at sx.blah.discord.util.RequestBuffer$RequestFuture.access$200(RequestBuffer.java:164)
    at sx.blah.discord.util.RequestBuffer$RequestRunnable.lambda$run$0(RequestBuffer.java:334)
    at sx.blah.discord.util.RequestBuffer$RequestRunnable$$Lambda$189/1522335058.accept(Unknown Source)
    at java.util.concurrent.CopyOnWriteArrayList.forEach(CopyOnWriteArrayList.java:890)
    at sx.blah.discord.util.RequestBuffer$RequestRunnable.run(RequestBuffer.java:331)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.http.client.NonRepeatableRequestException: Cannot retry request with a non-repeatable request entity
    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:108)
    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:111)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
    ... 25 common frames omitted
Caused by: java.io.IOException: stream is closed
    at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.ensureOpen(HttpURLConnection.java:3308)
    at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(HttpURLConnection.java:3333)
    at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(HttpURLConnection.java:3328)
    at org.apache.http.entity.mime.content.InputStreamBody.writeTo(InputStreamBody.java:92)
    at org.apache.http.entity.mime.AbstractMultipartForm.doWriteTo(AbstractMultipartForm.java:134)
    at org.apache.http.entity.mime.AbstractMultipartForm.writeTo(AbstractMultipartForm.java:157)
    at org.apache.http.entity.mime.MultipartFormEntity.writeTo(MultipartFormEntity.java:113)
    at org.apache.http.impl.execchain.RequestEntityProxy.writeTo(RequestEntityProxy.java:121)
    at org.apache.http.impl.DefaultBHttpClientConnection.sendRequestEntity(DefaultBHttpClientConnection.java:156)
    at org.apache.http.impl.conn.CPoolProxy.sendRequestEntity(CPoolProxy.java:160)
    at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:238)
    at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:272)
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)
    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
    ... 27 common frames omitted