I have Odoo 12 running on Ubuntu 18.04 Postgres 9.6

The system has been running for 2 weeks. However today I started getting issues when trying to search in contacts.  I suspect it has to do with Odoo trying to access the Postegresql database but I just cannot seem to find the issue. Help appreciated - Below is the error (and some other issues reported in the log):

2019-03-06 13:22:42,916 2192 INFO Ikeja werkzeug: 45.220.166.131 - - [06/Mar/2019 13:22:42] "POST /web/dataset/call_kw/res.partner/name_search HTTP/1.1" 200 - 3 0.001 0.005

Segmentation fault (core dumped)

I also have these 3 notifications in the log, maybe they have something to do with it:

wyradmin@odoo:/opt/odoo/odoo$ ./odoo-bin

/home/wyradmin/.local/lib/python3.6/site-packages/psycopg2/__init__.py:144: UserWarning: The psycopg2 wheel package will be renamed from release 2.8; in order to keep installing from binary please use "pip install psycopg2-binary" instead. For details see: <http://initd.org/psycopg/docs/install.html#binary-install-from-pypi>.

  """)

AND

2019-03-06 13:23:27,143 2253 INFO ? odoo.addons.bus.models.bus: Bus.loop listen imbus on db postgres

AND 

2019-03-06 13:23:23,156 2253 INFO Ikeja odoo.addons.sms.wizard.send_sms: The `phonenumbers` Python module is not available. Phone number validation will be skipped. Try `pip3 install phonenumbers` to install it.

Thanks to anyone who can assist