Images are broken when using https instead of http

As the subject suggests the images on the website run fine but on some particular pages they don't load.

For example
http://trademax.co.nz/Covid19-Essential ... NZ-Aerosol - This works fine

https://trademax.co.nz/Covid19-Essentia ... NZ-Aerosol - This one the images are broken

any help is appreciated.

Make sure you have changed from http to https in both config files.
Then redirect from www and non www to htpps in .htaccess