SPSS Analytic Server cannot start after updating of IBM BigInsights to 4.2

When I start SPSS Analytic Server 3.0 after updating of IBM BigInsights to 4.2, the server cannot start with this stacktrace:

Traceback (most recent call last):

  File "/var/lib/ambari-agent/cache/stacks/BigInsights/4.2/services/ANALYTICSERVER/package/scripts/analytics_server.py", line 57, in <module>

    Analytics_Server().execute()

  File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 219, in execute

    method(env)

  File "/var/lib/ambari-agent/cache/stacks/BigInsights/4.2/services/ANALYTICSERVER/package/scripts/analytics_server.py", line 35, in start

    self.configure(env)

  File "/var/lib/ambari-agent/cache/stacks/BigInsights/4.2/services/ANALYTICSERVER/package/scripts/analytics_server.py", line 29, in configure

    analytics(type='server')

  File "/var/lib/ambari-agent/cache/stacks/BigInsights/4.2/services/ANALYTICSERVER/package/scripts/analytics.py", line 41, in analytics

    status = port_validation.get_port_status(action = 'http')

  File "/var/lib/ambari-agent/cache/stacks/BigInsights/4.2/services/ANALYTICSERVER/package/scripts/port_validation.py", line 32, in get_port_status

    except socket.error, e:

NameError: global name 'socket' is not defined

Open the file 

/var/lib/ambari-server/resources/stacks/BigInsights/4.2/services/ANALYTICSERVER/package/scripts/port_validation.py

and add the string "import socket" as pointed here:

from resource_management import
import sys
import socket

Save the file and restart ambari-server and ambari-agents (if necessary)