It seems like array('id' => $this->plu...figuration() : array()) of type array<string,?,{"id":"?"...","configuration":"?"}> is incompatible with the declared type object<Drupal\graphql\Pl...eSystemPluginInterface> of property $plugin.
Our type inference engine has found an assignment to a property that is incompatible
with the declared type of that property.
Either this assignment is in error or the assigned type should be added
to the documentation/type hint for that property..
The class Drupal\Component\Plugin\...igurablePluginInterface does not exist. Did you forget a USE statement, or did you not list all dependencies?
This error could be the result of:
1. Missing dependencies
PHP Analyzer uses your composer.json file (if available) to determine the
dependencies of your project and to determine all the available classes and functions.
It expects the composer.json to be in the root folder of your repository.
Are you sure this class is defined by one of your dependencies, or did you maybe
not list a dependency in either the require or require-dev section?
2. Missing use statement
PHP does not complain about undefined classes in ìnstanceof checks. For
example, the following PHP code will work perfectly fine:
if($xinstanceofDoesNotExist){// Do something.}
If you have not tested against this specific condition, such errors might go
unnoticed.
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..