SSL certificate not updating

I installed an ssl certifictae few months ago and now its expired. When i am trying to update it using certbot renew, it give me a follwoing error. Any help will be greatly appreciated. Thanks Saving debug log to /var/log/letsencrypt/letsencrypt.log

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Processing /etc/letsencrypt/renewal/www.bureaubureau.dk.conf

Cert is due for renewal, auto-renewing… Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org Traceback (most recent call last): File “/usr/lib/python2.7/logging/init.py”, line 859, in emit msg = self.format(record) File “/usr/lib/python2.7/dist-packages/certbot/colored_logging.py”, line 41, i n format else super(StreamHandler, self).format(record)) File “/usr/lib/python2.7/logging/init.py”, line 732, in format return fmt.format(record) File “/usr/lib/python2.7/logging/init.py”, line 471, in format record.message = record.getMessage() File “/usr/lib/python2.7/logging/init.py”, line 335, in getMessage msg = msg % self.args TypeError: str returned non-string (type Error) Logged from file renewal.py, line 420 Traceback (most recent call last): File “/usr/lib/python2.7/logging/handlers.py”, line 76, in emit if self.shouldRollover(record): File “/usr/lib/python2.7/logging/handlers.py”, line 156, in shouldRollover msg = “%s\n” % self.format(record) File “/usr/lib/python2.7/logging/init.py”, line 732, in format return fmt.format(record) File “/usr/lib/python2.7/logging/init.py”, line 471, in format record.message = record.getMessage() File “/usr/lib/python2.7/logging/init.py”, line 335, in getMessage msg = msg % self.args TypeError: str returned non-string (type Error) Logged from file renewal.py, line 420

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Processing /etc/letsencrypt/renewal/bureaubureau.dk.conf

Cert is due for renewal, auto-renewing… Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org Traceback (most recent call last): File “/usr/lib/python2.7/logging/init.py”, line 859, in emit msg = self.format(record) File “/usr/lib/python2.7/dist-packages/certbot/colored_logging.py”, line 41, i n format else super(StreamHandler, self).format(record)) File “/usr/lib/python2.7/logging/init.py”, line 732, in format return fmt.format(record) File “/usr/lib/python2.7/logging/init.py”, line 471, in format record.message = record.getMessage() File “/usr/lib/python2.7/logging/init.py”, line 335, in getMessage msg = msg % self.args TypeError: str returned non-string (type Error) Logged from file renewal.py, line 420 Traceback (most recent call last): File “/usr/lib/python2.7/logging/handlers.py”, line 76, in emit if self.shouldRollover(record): File “/usr/lib/python2.7/logging/handlers.py”, line 156, in shouldRollover msg = “%s\n” % self.format(record) File “/usr/lib/python2.7/logging/init.py”, line 732, in format return fmt.format(record) File “/usr/lib/python2.7/logging/init.py”, line 471, in format record.message = record.getMessage() File “/usr/lib/python2.7/logging/init.py”, line 335, in getMessage msg = msg % self.args TypeError: str returned non-string (type Error) Logged from file renewal.py, line 420

All renewal attempts failed. The following certs could not be renewed: /etc/letsencrypt/live/www.bureaubureau.dk/fullchain.pem (failure) /etc/letsencrypt/live/bureaubureau.dk/fullchain.pem (failure) 2 renew failure(s), 0 parse failure(s)

Can anyone tell me how to fix this issue. I have gone through similar questions but nothing helped. So please have a look!