EC2 ubuntu 上的 Starcluster 停止工作。我不知道有任何故意的配置更改或其他任何事情，也无法找到太多帮助。如果有人有任何建议，你能告诉我吗？启动、终止甚至列出集群都会出错。以下是我尝试列出集群时遇到的错误：
ubuntu@ip-10-29-249-203:~$ starcluster listclusters
StarCluster - (http://star.mit.edu/cluster) (v. 0.94)
Software Tools for Academics and Researchers (STAR)
Please submit bug reports to starcluster@mit.edu
---------------------------------
revcls (security group: @sc-revcls)
---------------------------------
!!! ERROR - Unhandled exception occured
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/StarCluster-0.94-py2.7.egg/starcluster/cli.py", line 274, in main
sc.execute(args)
File "/usr/local/lib/python2.7/dist-packages/StarCluster-0.94-py2.7.egg/starcluster/commands/listclusters.py", line 36, in execute
show_ssh_status=self.opts.show_ssh_status)
File "/usr/local/lib/python2.7/dist-packages/StarCluster-0.94-py2.7.egg/starcluster/cluster.py", line 290, in list_clusters
nodes = cl.nodes
File "/usr/local/lib/python2.7/dist-packages/StarCluster-0.94-py2.7.egg/starcluster/cluster.py", line 720, in nodes
if n.is_master():
File "/usr/local/lib/python2.7/dist-packages/StarCluster-0.94-py2.7.egg/starcluster/node.py", line 883, in is_master
return self.alias == "master"
File "/usr/local/lib/python2.7/dist-packages/StarCluster-0.94-py2.7.egg/starcluster/node.py", line 139, in alias
aliases = aliasestxt.splitlines()[2:]
AttributeError: 'NoneType' object has no attribute 'splitlines'
!!! ERROR - Oops! Looks like you've found a bug in StarCluster
!!! ERROR - Crash report written to: /home/ubuntu/.starcluster/logs/crash-report-1183.txt
!!! ERROR - Please remove any sensitive data from the crash report
!!! ERROR - and submit it to starcluster@mit.edu