java.lang.IllegalArgumentException: Must supply a valid regex string

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projectId must match the following pattern: ([a-z\d-]{1,100}~)?([a-z\d][a-z\d-.]{0,99}:)?([a-z\d][a-z\d-]{0,99})
java.lang.IllegalArgumentException: Must supply a valid regex string
at org.apache.flume.interceptor.RegexExtractorInterceptor$Builder.configure(RegexExtractorInterceptor.java:175)
at org.apache.flume.channel.ChannelProcessor.configureInterceptors(ChannelProcessor.java:110)
at org.apache.flume.channel.ChannelProcessor.configure(ChannelProcessor.java:80)
at org.apache.flume.node.AbstractConfigurationProvider.loadSources(AbstractConfigurationProvider.java:348)
at org.apache.flume.node.AbstractConfigurationProvider.getConfiguration(AbstractConfigurationProvider.java:97)
at org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable.run(PollingPropertiesFileConfigurationProvider.java:140)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

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