AWS SSM自动更新因ImportError失败：无法导入名称reboot_controller

如何解决AWS SSM自动更新因ImportError失败：无法导入名称reboot_controller

已经有几个星期了，我所有的AWS自动更新（通过维护窗口）都失败了，这是我在实例输出日志中看到的内容

The command output displays a maximum of 2500 characters. You can view the complete command output in CloudWatch logs. 
/usr/bin/python2.7

/usr/bin/python2

/usr/bin/python

/usr/bin/yum

Using Yum version: 3.4.3

Using python binary: 'python2.7'

Using Python Version: Python 2.7.18

/usr/bin/curl

/usr/bin/wget

08/18/2020 02:00:50 root [INFO]: Downloading payload from https://s3.dualstack.eu-central-1.amazonaws.com/aws-ssm-eu-central-1/patchbaselineoperations/linux/payloads/patch-baseline-operations-1.53.tar.gz

08/18/2020 02:00:51 root [INFO]: Running with snapshot id = xxx and operation = Install

08/18/2020 02:00:51 botocore.credentials [INFO]: Found credentials in environment variables.

08/18/2020 02:00:52 root [INFO]: Instance Id: i-xxxx

08/18/2020 02:00:52 root [INFO]: Region: eu-central-1

08/18/2020 02:00:52 root [INFO]: Product: AmazonLinux2

08/18/2020 02:00:52 root [INFO]: Patch Group:

08/18/2020 02:00:52 root [INFO]: Operation type: Install

08/18/2020 02:00:52 root [INFO]: Snapshot Id: xxxx

08/18/2020 02:00:52 root [INFO]: Patch Baseline: {u'approvedPatchesEnableNonSecurity': False,u'baselineId': u'pb-043cba60253bab521',u'name': u'AWS-AmazonLinux2DefaultPatchBaseline',u'modifiedTime': 1529559893.061,u'description': u'Default Patch Baseline for Amazon Linux 2 Provided by AWS.',u'rejectedPatches': [],u'globalFilters': {u'filters': [{u'values': [u'*'],u'key': u'PRODUCT'}]},u'sources': [],u'approvalRules': {u'rules': [{u'enableNonSecurity': False,u'filterGroup': {u'filters': [{u'values': [u'Security'],u'key': u'CLASSIFICATION'},{u'values': [u'Critical',u'Important'],u'key': u'SEVERITY'}]},u'approveAfterDays': 7,u'complianceLevel': u'UNSPECIFIED',u'approveUntilDate': None},{u'enableNonSecurity': False,u'filterGroup': {u'filters': [{u'values': [u'Bugfix'],u'key': u'CLASSIFICATION'}]},u'approveUntilDate': None}]},u'createdTime': 1529559893.061,u'rejectedPatchesAction': u'ALLOW_AS_DEPENDENCY',u'approvedPatchesComplianceLevel': u'UNSPECIFIED',u'operatingSystem': u'AMAZON_LINUX_2',u'approvedPatches': [],u'accountId': u'416089608788'}

08/18/2020 02:00:52 root [INFO]: Reboot Option: RebootIfNeede

---Output truncated---

----------ERROR-------

Traceback (most recent call last):

File "./main_entrance.py",line 18,in <module>

File "/var/log/amazon/ssm/patch-baseline-operations/patch_common/package_compliance.py",line 12,in <module>

ImportError: cannot import name reboot_controller

Failed to run commands: exit status 1

任何想法可能是什么原因造成的？

ImportError：无法导入名称reboot_controller