Quickly creating an issue for this; proper issue summary will follow.
https://www.drupal.org/docs/8/upgrade/upgrade-using-web-browser#pre-upgr...
If the database credentials to your source database are correct, the upgrade review page will appear as illustrated in the screenshot below. This page shows a summary of the upgrade status for all installed modules on the old site.
Latest iterations use this help text instead:
The new site is missing modules corresponding to the old site's modules. Unless they are installed prior to the upgrade, configuration and/or content needed by them will not be available on your new site. Read the checklist to help decide what to do.
GitHub Issue #:
3577
Recent comments
Hi I added the 2 additional settings in settings.php, did a restart - and the error disappeared! Thanks for the support! (but the issues with the conversion still remain .....
Problem with utf8mb4 Format when importing database
With JQuery, simple and fast. Or put all possible links in one menu, and hide unnecessary with CSS mediaquery.
Different primary menus depending on the viewport size?
I wonder if what is happening here is the default database settings are for utf8mb4 if the database server supports it. In settings.php or settings.local.php if that's where you put your...
Problem with utf8mb4 Format when importing database