I have a website running an old version of PHP and Joomla. We have always been very worried about updating the website because in the past we had issues with things breaking when doing updates on Joomla or the plugins and we can't afford for the website to not be live as we have a large customer base that relies on it.
We are now getting PHP errors which are preventing us from adding new items to our website.
Can anyone possibly offer some assistance? Is updating Joomla and K2 the best way to go or would it be easier to manually rewrite the PHP code? I have included some images showing the errors and the current versions we are using.