More data of debug logs:

2019-05-03 11:33:39,842:[driver.pub.utils.restcall]:[restcall.py]-[52] [DEBUG]:[4c362afe-6d97-11e9-848e-46ee13b2f269][0]status=500,resp_body=ProgrammingError at /api/vnflcm/v1/vnf_instances
(1146, u"Table 'gvnfm.auth_user' doesn't exist")

Request Method: POST
Request URL: http://vnflcm/api/vnflcm/v1/vnf_instances
Django Version: 1.11.9
Python Executable: /usr/bin/python
Python Version: 2.7.6
Python Path: ['/service/vfc/gvnfm/vnflcm/lcm', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages']

Installed Applications:
['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'rest_framework',
 'lcm.pub.database',
 'lcm.samples',
 'lcm.swagger',
 'drf_yasg']