2021-12-24 19:28:53.554+0000 [id=38] INFO c.a.jenkins.ec2fleet.CloudNanny#doRun: Error during fleet 'FleetCloud' stats update
 com.amazonaws.services.securitytoken.model.AWSSecurityTokenServiceException: 1 validation error detected: Value '' at 'externalId' failed to satisfy constraint: Member must have length greater than or equal to 2 (Service: AWSSecurityTokenService; Status Code: 400; Error Code: ValidationError; Request ID: 8fc4dd97-bb40-4ffb-99f3-c0d464cf9a27; Proxy: null)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1862)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleServiceErrorResponse(AmazonHttpClient.java:1415)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1384)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1154)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:811)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:779)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:753)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:713)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:695)
 at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:559)
 at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:539)
 at com.amazonaws.services.securitytoken.AWSSecurityTokenServiceClient.doInvoke(AWSSecurityTokenServiceClient.java:1682)
 at com.amazonaws.services.securitytoken.AWSSecurityTokenServiceClient.invoke(AWSSecurityTokenServiceClient.java:1649)
 at com.amazonaws.services.securitytoken.AWSSecurityTokenServiceClient.invoke(AWSSecurityTokenServiceClient.java:1638)
 at com.amazonaws.services.securitytoken.AWSSecurityTokenServiceClient.executeAssumeRole(AWSSecurityTokenServiceClient.java:498)
 at com.amazonaws.services.securitytoken.AWSSecurityTokenServiceClient.assumeRole(AWSSecurityTokenServiceClient.java:467)
 at com.cloudbees.jenkins.plugins.awscredentials.AWSCredentialsImpl.getCredentials(AWSCredentialsImpl.java:161)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.getCredentialsFromContext(AmazonHttpClient.java:1266)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.runBeforeRequestHandlers(AmazonHttpClient.java:842)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:792)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:779)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:753)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:713)
 at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:695)
 at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:559)
 at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:539)
 at com.amazonaws.services.autoscaling.AmazonAutoScalingClient.doInvoke(AmazonAutoScalingClient.java:4931)
 at com.amazonaws.services.autoscaling.AmazonAutoScalingClient.invoke(AmazonAutoScalingClient.java:4898)
 at com.amazonaws.services.autoscaling.AmazonAutoScalingClient.invoke(AmazonAutoScalingClient.java:4887)
 at com.amazonaws.services.autoscaling.AmazonAutoScalingClient.executeDescribeAutoScalingGroups(AmazonAutoScalingClient.java:1847)
 at com.amazonaws.services.autoscaling.AmazonAutoScalingClient.describeAutoScalingGroups(AmazonAutoScalingClient.java:1815)
 at com.amazon.jenkins.ec2fleet.fleet.AutoScalingGroupFleet.getState(AutoScalingGroupFleet.java:78)
 at com.amazon.jenkins.ec2fleet.EC2FleetCloud.update(EC2FleetCloud.java:464)
 at com.amazon.jenkins.ec2fleet.CloudNanny.doRun(CloudNanny.java:55)
 at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:90)
 at jenkins.security.ImpersonatingScheduledExecutorService$1.run(ImpersonatingScheduledExecutorService.java:67)
 at java.util.concurrent.Executors$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:1149)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 at java.lang.Thread.run(Thread.java:748)