环信303:unknown server error

这几天也没动程序突然就出现这个错误了，软件安装完后第一次登录就会提示303:unknown server error，关了重新登录就能进去，实在是不知道哪里出错，大家帮忙看看谢谢了，下面是错误代码。
 
02-19 10:22:16.859: W/IInputConnectionWrapper(9293): clearMetaKeyStates on inactive InputConnection
02-19 10:22:16.869: W/IInputConnectionWrapper(9293): clearMetaKeyStates on inactive InputConnection
02-19 10:22:16.949: W/IInputConnectionWrapper(9293): clearMetaKeyStates on inactive InputConnection
02-19 10:22:19.719: D/LoginActivity(9293): EMClient.getInstance().login
02-19 10:22:19.719: D/ONE SDK(9293): [2017/2/19 10:22:19:728]: emchat manager login in process:9293
02-19 10:22:19.759: D/ONE SDK(9293): [2017/2/19 10:22:19:772]: EMSessionManager::login(): m2m2lu
02-19 10:22:19.759: D/ONE SDK(9293): [2017/2/19 10:22:19:772]: getDnsListFromServer()
02-19 10:22:19.759: D/ONE SDK(9293): [2017/2/19 10:22:19:773]: buildUrl(): https:///easemob/server.json?sdk_version=3.1.2&app_key=reason%23doorbell&file_version=41
02-19 10:22:19.759: I/hyphenate_jni(9293): httprequest perform: https:///easemob/server.json?sdk_version=3.1.2&app_key=reason%23doorbell&file_version=41
02-19 10:22:19.759: D/ONE SDK(9293): [2017/2/19 10:22:19:776]: httpExecute
02-19 10:22:19.779: D/ONE SDK(9293): [2017/2/19 10:22:19:788]: Host name may not be null
02-19 10:22:19.779: W/System.err(9293): java.lang.IllegalArgumentException: Host name may not be null
02-19 10:22:19.779: W/System.err(9293):     at org.apache.http.HttpHost.(HttpHost.java:83)
02-19 10:22:19.779: W/System.err(9293):     at org.apache.http.impl.client.AbstractHttpClient.determineTarget(AbstractHttpClient.java:497)
02-19 10:22:19.779: W/System.err(9293):     at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
02-19 10:22:19.779: W/System.err(9293):     at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
02-19 10:22:19.779: W/System.err(9293):     at com.hyphenate.chat.adapter.EMARHttpAPI._httpExecute(Unknown Source)
02-19 10:22:19.779: W/System.err(9293):     at com.hyphenate.chat.adapter.EMARHttpAPI.httpExecute(Unknown Source)
02-19 10:22:19.779: W/System.err(9293):     at com.hyphenate.chat.adapter.EMAChatClient.native_login(Native Method)
02-19 10:22:19.789: W/System.err(9293):     at com.hyphenate.chat.adapter.EMAChatClient.login(Unknown Source)
02-19 10:22:19.789: W/System.err(9293):     at com.hyphenate.chat.EMClient$6.run(Unknown Source)
02-19 10:22:19.789: W/System.err(9293):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
02-19 10:22:19.789: W/System.err(9293):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
02-19 10:22:19.789: W/System.err(9293):     at java.lang.Thread.run(Thread.java:856)
02-19 10:22:19.789: D/ONE SDK(9293): [2017/2/19 10:22:19:804]: can't catch exceptions
02-19 10:22:19.789: D/ONE SDK(9293): [2017/2/19 10:22:19:805]: 1 time retry
02-19 10:22:19.789: D/ONE SDK(9293): [2017/2/19 10:22:19:805]: getDnsListFromServer code: 400 response: 
02-19 10:22:19.799: I/hyphenate_jni(9293): httprequest perform: https:///easemob/server.json?sdk_version=3.1.2&app_key=reason%23doorbell&file_version=41
02-19 10:22:19.799: D/ONE SDK(9293): [2017/2/19 10:22:19:808]: httpExecute
02-19 10:22:19.809: D/ONE SDK(9293): [2017/2/19 10:22:19:824]: Host name may not be null
02-19 10:22:19.809: W/System.err(9293): java.lang.IllegalArgumentException: Host name may not be null
02-19 10:22:19.809: W/System.err(9293):     at org.apache.http.HttpHost.(HttpHost.java:83)
02-19 10:22:19.819: W/System.err(9293):     at org.apache.http.impl.client.AbstractHttpClient.determineTarget(AbstractHttpClient.java:497)
02-19 10:22:19.819: W/System.err(9293):     at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
02-19 10:22:19.819: W/System.err(9293):     at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
02-19 10:22:19.819: W/System.err(9293):     at com.hyphenate.chat.adapter.EMARHttpAPI._httpExecute(Unknown Source)
02-19 10:22:19.819: W/System.err(9293):     at com.hyphenate.chat.adapter.EMARHttpAPI.httpExecute(Unknown Source)
02-19 10:22:19.819: W/System.err(9293):     at com.hyphenate.chat.adapter.EMAChatClient.native_login(Native Method)
02-19 10:22:19.819: W/System.err(9293):     at com.hyphenate.chat.adapter.EMAChatClient.login(Unknown Source)
02-19 10:22:19.819: W/System.err(9293):     at com.hyphenate.chat.EMClient$6.run(Unknown Source)
02-19 10:22:19.819: W/System.err(9293):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
02-19 10:22:19.829: W/System.err(9293):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
02-19 10:22:19.829: W/System.err(9293):     at java.lang.Thread.run(Thread.java:856)
02-19 10:22:19.849: D/ONE SDK(9293): [2017/2/19 10:22:19:855]: can't catch exceptions
02-19 10:22:19.849: D/ONE SDK(9293): [2017/2/19 10:22:19:858]: 2 time retry
02-19 10:22:19.849: D/ONE SDK(9293): [2017/2/19 10:22:19:859]: getDnsListFromServer code: 400 response: 
02-19 10:22:19.849: I/hyphenate_jni(9293): httprequest perform: https:///easemob/server.json?sdk_version=3.1.2&app_key=reason%23doorbell&file_version=41
02-19 10:22:19.849: D/ONE SDK(9293): [2017/2/19 10:22:19:863]: httpExecute
02-19 10:22:19.859: W/System.err(9293): java.lang.IllegalArgumentException: Host name may not be null
02-19 10:22:19.859: D/ONE SDK(9293): [2017/2/19 10:22:19:867]: Host name may not be null
02-19 10:22:19.859: W/System.err(9293):     at org.apache.http.HttpHost.(HttpHost.java:83)
02-19 10:22:19.859: W/System.err(9293):     at org.apache.http.impl.client.AbstractHttpClient.determineTarget(AbstractHttpClient.java:497)
02-19 10:22:19.859: W/System.err(9293):     at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
02-19 10:22:19.859: W/System.err(9293):     at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
02-19 10:22:19.859: W/System.err(9293):     at com.hyphenate.chat.adapter.EMARHttpAPI._httpExecute(Unknown Source)
02-19 10:22:19.859: W/System.err(9293):     at com.hyphenate.chat.adapter.EMARHttpAPI.httpExecute(Unknown Source)
02-19 10:22:19.859: W/System.err(9293):     at com.hyphenate.chat.adapter.EMAChatClient.native_login(Native Method)
02-19 10:22:19.859: W/System.err(9293):     at com.hyphenate.chat.adapter.EMAChatClient.login(Unknown Source)
02-19 10:22:19.859: W/System.err(9293):     at com.hyphenate.chat.EMClient$6.run(Unknown Source)
02-19 10:22:19.859: W/System.err(9293):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
02-19 10:22:19.859: W/System.err(9293):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
02-19 10:22:19.869: W/System.err(9293):     at java.lang.Thread.run(Thread.java:856)
02-19 10:22:19.869: D/ONE SDK(9293): [2017/2/19 10:22:19:877]: can't catch exceptions
02-19 10:22:19.869: D/ONE SDK(9293): [2017/2/19 10:22:19:878]: 3 time retry
02-19 10:22:19.869: D/ONE SDK(9293): [2017/2/19 10:22:19:879]: getDnsListFromServer code: 400 response: 
02-19 10:22:19.869: D/ONE SDK(9293): [2017/2/19 10:22:19:880]: getDnsListFromServer failed
02-19 10:22:19.869: D/ONE SDK(9293): [2017/2/19 10:22:19:881]: do stop service
02-19 10:22:19.869: D/LoginActivity(9293): login: onError: 303