Weird "Failed to fetch launch darkly feature flags" error in my Jira logs

[Alin Oana]

My on-prem Jira instance is logging the error below, and I have no clue why, as launch darkly is not configured on this instance.

In the jira -> System- advanced settings there is no features configuration set.

Any idea?

I would like to disable this mechanism if possible.

Thanks

2025-09-30 19:51:26,662+0000 pool-98-thread-1 WARN      [c.atlassian.fx3.Fx3Client] Failed to fetch launch darkly feature flags: + An error occurred when requesting against resource https://api.atlassian.com/flags/api/v2/frontend/featureFlagValues: api.atlassian.com: No address associated with hostname

com.atlassian.jira.migration.httpclient.exceptions.HttpCommunicationException: An error occurred when requesting against resource https://api.atlassian.com/flags/api/v2/frontend/featureFlagValues: api.atlassian.com: No address associated with hostname

at com.atlassian.jira.migration.httpclient.exceptions.ExceptionsKt.communicationError(Exceptions.kt:15)

at com.atlassian.jira.migration.httpclient.AbstractPluginHttpClient.getResponse(AbstractPluginHttpClient.kt:166)

at com.atlassian.jira.migration.fx3.Fx3ObjectMapperFactory$createFx3HttpCallback$1.post(Fx3ObjectMapperFactory.kt:98)

at com.atlassian.fx3.Fx3Client.fetch(Fx3Client.kt:188)

at com.atlassian.fx3.Fx3Client.fetchFlags(Fx3Client.kt:165)

at com.atlassian.fx3.Fx3Client.performBackgroundFetch$fx3_client(Fx3Client.kt:152)

at com.atlassian.fx3.Fx3Client$Companion.init$lambda$0(Fx3Client.kt:78)

at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)

at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)

at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)

at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)

at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)

at java.base/java.lang.Thread.run(Thread.java:840)

Caused by: java.net.UnknownHostException: api.atlassian.com: No address associated with hostname

at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)

at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:934)

at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1543)

at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:852)

at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1533)

at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1385)

at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1306)

at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45)

at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:112)

at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376)

at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393)

at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)

at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)

at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)

at org.apache.http.impl.execchain.ServiceUnavailableRetryExec.execute(ServiceUnavailableRetryExec.java:85)

at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)

at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)

at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)

at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)

at com.atlassian.jira.migration.httpclient.AbstractPluginHttpClient.getResponse(AbstractPluginHttpClient.kt:162)

... 11 more