Please run the below commands and try again:
php bin/magento module:disable Temando_Shipping
rm -rf var/cache/ generated/code pub/static/frontend pub/static/adminhtml
php bin/magento setup:upgrade
php bin/magento setup:static-content:deploy -f
php bin/magento setup:di:compile
sudo chmod -R 777 var/ pub/ generated/
Edit
Also, remove the Temando_Shipping attributes added in the attribute set after disabling the module else Magento throws an error on the admin product edit form.
Update
By upgrading to Magento 2.3.5p1, the Temando_Shipping module will be removed automatically from the Magento.
