# any idea to know that why my server got reset ?

**URL:** <https://community.wowza.com/t/any-idea-to-know-that-why-my-server-got-reset/52103>\
**Category:** Wowza Streaming Engine\
**Created:** [October 9, 2018, 4:39pm UTC](https://community.wowza.com/t/any-idea-to-know-that-why-my-server-got-reset/52103 "2018-10-09T16:39:34Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![redsparrow\_wang](https://avatars.discourse-cdn.com/v4/letter/r/3be4f8/32.png) [@redsparrow\_wang](https://community.wowza.com/u/redsparrow_wang)\
**Post date:** [October 9, 2018, 4:39pm UTC](https://community.wowza.com/t/any-idea-to-know-that-why-my-server-got-reset/52103/1 "2018-10-09T16:39:34Z")

</div>

currently, only know that an iOS client send some message to server through call server method, then got a lot of error at server, and server’s application will be reset,

any idea to know that why my server got reset ?

any idea to detect the problem character code to make this error ? (i can filter it in client)

help pls. thanks

```auto
ERROR	server	comment	2018-10-06	10:39:36	-	-	-	-	-	98815.025	-	-	-	-	-	-	-	-	AMFDataContextSerialize.writeString : java.lang.NullPointerException|
ERROR	server	comment	2018-10-06	10:39:36	-	-	-	-	-	98815.027	-	-	-	-	-	-	-	-	AMFDataContextSerialize.writeString : java.lang.NullPointerException|
ERROR	server	comment	2018-10-06	10:39:36	-	-	-	-	-	98815.027	-	-	-	-	-	-	-	-	AMFDataContextSerialize.writeString : java.lang.NullPointerException|
ERROR	server	comment	2018-10-06	10:39:36	-	-	-	-	-	98815.027	-	-	-	-	-	-	-	-	AMFDataContextSerialize.writeString : java.lang.NullPointerException|
ERROR	server	comment	2018-10-06	10:44:32	-	-	-	-	-	99111.133	-	-	-	-	-	-	-	-	constructor AMFDataObj(ByteBuffer)[110:175] : java.io.UTFDataFormatException: malformed input around byte 0|at com.wowza.wms.amf.AMF3Utils.deserializeString(AMF3Utils.java:286)|at com.wowza.wms.amf.AMF3Utils.deserializeString(AMF3Utils.java:193)|at com.wowza.wms.amf.AMFDataItem.deserialize(AMFDataItem.java:401)|at com.wowza.wms.amf.AMFDataItem.<init>(AMFDataItem.java:176)|at com.wowza.wms.amf.AMFData.deserializeInnerObject(AMFData.java:342)|
ERROR	server	comment	2018-10-06	10:44:32	-	-	-	-	-	99111.133	-	-	-	-	-	-	-	-	AMFDataContextSerialize.writeString : java.lang.NullPointerException|
ERROR	server	comment	2018-10-06	10:44:33	-	-	-	-	-	99111.155	-	-	-	-	-	-	-	-	AMFDataContextSerialize.writeString : java.lang.NullPointerException|
ERROR	server	comment	2018-10-06	10:44:33	-	-	-	-	-	99111.155	-	-	-	-	-	-	-	-	AMFDataContextSerialize.writeString : java.lang.NullPointerException|
ERROR	server	comment	2018-10-06	10:48:28	-	-	-	-	-	99346.321	-	-	-	-	-	-	-	-	constructor AMFDataObj(ByteBuffer)[110:175] : java.io.UTFDataFormatException: malformed input around byte 0|at com.wowza.wms.amf.AMF3Utils.deserializeString(AMF3Utils.java:286)|at com.wowza.wms.amf.AMF3Utils.deserializeString(AMF3Utils.java:193)|at com.wowza.wms.amf.AMFDataItem.deserialize(AMFDataItem.java:401)|at com.wowza.wms.amf.AMFDataItem.<init>(AMFDataItem.java:176)|at com.wowza.wms.amf.AMFData.deserializeInnerObject(AMFData.java:342)|
ERROR	server	comment	2018-10-06	10:48:28	-	-	-	-	-	99346.321	-	-	-	-	-	-	-	-	AMFDataContextSerialize.writeString : java.lang.NullPointerException|
ERROR	server	comment	2018-10-06	10:48:28	-	-	-	-	-	99346.322	-	-	-	-	-	-	-	-	AMFDataContextSerialize.writeString : java.lang.NullPointerException|
ERROR	server	comment	2018-10-06	10:48:28	-	-	-	-	-	99346.322	-	-	-	-	-	-	-	-	AMFDataContextSerialize.writeString : java.lang.NullPointerException|
WARN	server	comment	2018-10-06	10:55:42	-	-	-	-	-	99780.213	-	-	-	-	-	-	-	-	LiveStreamPacketizerPacketHandler.handlePacket[test/d7d00d99afe4763cb9f0ede8bde69db4/aacc20db51e789196ff88304588c708c]: Audio and video codecs cannot be packetized together in a single stream: audio:NELLYMOSER_8MONO video:SPARK
#Version: 1.0
#Start-Date: 2018-10-06 11:04:10 JST
#Software: Wowza Streaming Engine 4.7.1 build20635
#Date: 2018-10-06
#Fields: x-severity	x-category	x-event	date	time	c-client-id	c-ip	c-port	cs-bytes	sc-bytes	x-duration	x-sname	x-stream-id	x-spos	sc-stream-bytes	cs-stream-bytes	x-file-size	x-file-length	x-ctx	x-comment

```

---

<div class="post-metadata">

**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\
**Post date:** [October 9, 2018, 5:50pm UTC](https://community.wowza.com/t/any-idea-to-know-that-why-my-server-got-reset/52103/2 "2018-10-09T17:50:23Z")

</div>

Hello @redsparrow wang, I’m sorry you experienced this, but we need you to open a support ticket for us to properly diagnose the cause. This will give you the most accurate results.

> **[Open a Support Ticket | Wowza Media Systems](https://www.wowza.com/support/open-ticket)**
>
> Wowza technical support engineers worldwide help you succeed with your Wowza Streaming Engine™ software or the Wowza Streaming Cloud™ service.