Undertow on aws ecs running as fargate instance

AWS ELB is sending health check request to the server where the request content is unicode encoded and getting following exception

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Caused by: java.lang.IllegalArgumentException: Invalid string contents ���ﾣ�ﾟ��ﾙﾅﾋLﾕi=￨#"ﾩￌ��￯c￠�oﾙ￨￰
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at io.undertow.util.HttpString.<init>(HttpString.java:116) ~[undertow-core-2.0.17.Final.jar!/:2.0.17.Final]
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at io.undertow.util.HttpString.<init>(HttpString.java:106) ~[undertow-core-2.0.17.Final.jar!/:2.0.17.Final]
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at io.undertow.server.protocol.http.HttpRequestParser$$generated.handleHttpVerb(Unknown Source) ~[undertow-core-2.0.17.Final.jar!/:2.0.17.Final]
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at io.undertow.server.protocol.http.HttpRequestParser.handle(HttpRequestParser.java:243) ~[undertow-core-2.0.17.Final.jar!/:2.0.17.Final]
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... 12 more
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2019-03-01 09:56:50.422 TRACE 1 — [ XNIO-2 I/O-1] i.u.request : Opened connection with /10.202.20.152:14950
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2019-03-01 09:56:50.423 DEBUG 1 — [ XNIO-2 I/O-1] i.u.r.io : UT005014: Failed to parse request
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io.undertow.util.BadRequestException: null
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at io.undertow.server.protocol.http.HttpRequestParser$$generated.handleHttpVerb(Unknown Source) ~[undertow-core-2.0.17.Final.jar!/:2.0.17.Final]
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at io.undertow.server.protocol.http.HttpRequestParser.handle(HttpRequestParser.java:243) ~[undertow-core-2.0.17.Final.jar!/:2.0.17.Final]
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at io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:187) [undertow-core-2.0.17.Final.jar!/:2.0.17.Final]
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at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:136) [undertow-core-2.0.17.Final.jar!/:2.0.17.Final]
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at io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:162) [undertow-core-2.0.17.Final.jar!/:2.0.17.Final]
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at io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:100) [undertow-core-2.0.17.Final.jar!/:2.0.17.Final]
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at io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:57) [undertow-core-2.0.17.Final.jar!/:2.0.17.Final]
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at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) [xnio-api-3.7.0.Final.jar!/:3.7.0.Final]
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at org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:291) [xnio-api-3.7.0.Final.jar!/:3.7.0.Final]
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at org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:286) [xnio-api-3.7.0.Final.jar!/:3.7.0.Final]
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at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) [xnio-api-3.7.0.Final.jar!/:3.7.0.Final]
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at org.xnio.nio.QueuedNioTcpServer$1.run(QueuedNioTcpServer.java:131) [xnio-nio-3.7.0.Final.jar!/:3.7.0.Final]
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at org.xnio.nio.WorkerThread.safeRun(WorkerThread.java:612) [xnio-nio-3.7.0.Final.jar!/:3.7.0.Final]
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at org.xnio.nio.WorkerThread.run(WorkerThread.java:479) [xnio-nio-3.7.0.Final.jar!/:3.7.0.Final]