eolivelli opened a new issue #10181:
URL: https://github.com/apache/pulsar/issues/10181
**Describe the bug**
```
12:42:54.274 [pulsar-io-52-23] WARN
org.apache.pulsar.broker.service.ServerCnx - [/127.0.0.1:55491] Got exception
java.lang.NullPointerException
at
org.apache.pulsar.broker.service.ServerCnx.handleNewTxn(ServerCnx.java:1780)
at
org.apache.pulsar.common.protocol.PulsarDecoder.channelRead(PulsarDecoder.java:366)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at
io.netty.handler.flow.FlowControlHandler.dequeue(FlowControlHandler.java:200)
at
io.netty.handler.flow.FlowControlHandler.channelRead(FlowControlHandler.java:162)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at
io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)
at
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at
io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.j
```
**To Reproduce**
Try to create a transaction against a broker that is not configured for
transactions
**Expected behaviour**
a better error for the user
**Additional context**
I am testing current Pulsar master
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