java.lang.AssertionError: null

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java.lang.AssertionError: null
at org.apache.cassandra.config.Schema.getKSMetaData(Schema.java:222)
at org.apache.cassandra.cql3.CQL3Type$Raw$RawUT.prepare(CQL3Type.java:510)
at org.apache.cassandra.cql3.statements.CreateFunctionStatement.announceMigration(CreateFunctionStatement.java:115)
at org.apache.cassandra.cql3.statements.SchemaAlteringStatement.execute(SchemaAlteringStatement.java:80)
at org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:226)
at org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:248)
at org.apache.cassandra.transport.messages.QueryMessage.execute(QueryMessage.java:118)
at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:439)
at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:335)
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333)
at io.netty.channel.AbstractChannelHandlerContext.access$700(AbstractChannelHandlerContext.java:32)
at io.netty.channel.AbstractChannelHandlerContext$8.run(AbstractChannelHandlerContext.java:324)
at org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:164)
at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105)
at java.lang.Thread.run(Thread.java:745)

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