In my case I was using the Entity Auto Term module, which issued a patch fixing a known issue. The patch i’m trying to apply is https://www.drupal.org/files/issues/2018-09-28/no-duplicate-terms-2945343-5.patch and part of it looks like this:
To apply it, you have to edit your composer.json located at your website root, pictured here via Filezilla FTP:
I right click view/edit to edit it in Notepad++ here:
I will need to add the red part below. You will most likely have the green part already present, so just edit the red “patches” section to fit your needs.
"extra": {
"installer-paths": {
"web/core": ["type:drupal-core"],
"web/libraries/{$name}": ["type:drupal-library"],
"web/modules/contrib/{$name}": ["type:drupal-module"],
"web/profiles/contrib/{$name}": ["type:drupal-profile"],
"web/themes/contrib/{$name}": ["type:drupal-theme"],
"drush/contrib/{$name}": ["type:drupal-drush"]
},
"patches": {
"drupal/eat": {
"Drupal EAT fix duplicate terms": "https://www.drupal.org/files/issues/2018-09-28/no-duplicate-terms-2945343-5.patch"
}
}
}
Next run Composer Update, and the output should look like this:
That’s it you should be all set!