camel-k-example-event-streaming open-aq-consumer is failing with 503 on api.openaq.org

kamel run OpenAQConsumer.java

: org.apache.camel.http.common.HttpOperationFailedException: HTTP operation failed invoking https://api.openaq.org/v1/measurements?limit=10000 with statusCode: 503
	at org.apache.camel.component.http.HttpProducer.populateHttpOperationFailedException(HttpProducer.java:419)
	at org.apache.camel.component.http.HttpProducer.process(HttpProducer.java:291)
	at org.apache.camel.support.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:66)
	at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:172)
	at org.apache.camel.processor.errorhandler.RedeliveryErrorHandler$SimpleTask.run(RedeliveryErrorHandler.java:463)
	at org.apache.camel.impl.engine.DefaultReactiveExecutor$Worker.schedule(DefaultReactiveExecutor.java:179)
	at org.apache.camel.impl.engine.DefaultReactiveExecutor.scheduleMain(DefaultReactiveExecutor.java:64)
	at org.apache.camel.processor.Pipeline.process(Pipeline.java:184)
	at org.apache.camel.impl.engine.CamelInternalProcessor.process(CamelInternalProcessor.java:398)
	at org.apache.camel.component.timer.TimerConsumer.sendTimerExchange(TimerConsumer.java:209)
	at org.apache.camel.component.timer.TimerConsumer$1.run(TimerConsumer.java:76)
	at java.base/java.util.TimerThread.mainLoop(Timer.java:556)
	at java.base/java.util.TimerThread.run(Timer.java:506)2021-08-02 14:58:56,147 WARN  [org.apa.cam.com.tim.TimerConsumer] (Camel (camel-1) thread #0 - timer://refresh) Error processing exchange. Exchange[D4A3B8CC8BFCE73-0000000000000001]. Caused by: [org.apache.camel.http.common.HttpOperationFailedException - HTTP operation failed invoking https://api.openaq.org/v1/measurements?limit=10000 with statusCode: 503]: org.apache.camel.http.common.HttpOperationFailedException: HTTP operation failed invoking https://api.openaq.org/v1/measurements?limit=10000 with statusCode: 503
	at org.apache.camel.component.http.HttpProducer.populateHttpOperationFailedException(HttpProducer.java:419)
	at org.apache.camel.component.http.HttpProducer.process(HttpProducer.java:291)
	at org.apache.camel.support.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:66)
	at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:172)
	at org.apache.camel.processor.errorhandler.RedeliveryErrorHandler$SimpleTask.run(RedeliveryErrorHandler.java:463)
	at org.apache.camel.impl.engine.DefaultReactiveExecutor$Worker.schedule(DefaultReactiveExecutor.java:179)
	at org.apache.camel.impl.engine.DefaultReactiveExecutor.scheduleMain(DefaultReactiveExecutor.java:64)
	at org.apache.camel.processor.Pipeline.process(Pipeline.java:184)
	at org.apache.camel.impl.engine.CamelInternalProcessor.process(CamelInternalProcessor.java:398)
	at org.apache.camel.component.timer.TimerConsumer.sendTimerExchange(TimerConsumer.java:209)
	at org.apache.camel.component.timer.TimerConsumer$1.run(TimerConsumer.java:76)
	at java.base/java.util.TimerThread.mainLoop(Timer.java:556)
	at java.base/java.util.TimerThread.run(Timer.java:506)