Confirm that php71 and php73 unit tests are passing with this patch (travis tells you). Nothing to do here - travis is passing. Confirm that a php74 phpunit and behat runs does not return any* "creating default object from empty value". Can use a DEV job to verify that, php74-rc is available there. Otherwise, do a full run of phpunit on 7.4, passing the output to a file which you can search afterwards. Note: there is one exception to this, and it's MDL-66259 that is being handled separately. With that issue still not integrated it's possible to find the "creating default object from empty value" happening for some qtypes (multianswer). If those are the unique cases, that's ok for this issue. Note2: under php74 there are still lots of errors. Ignore them 100%. Here we are only interested about the "creating default object from empty value" ones.