WARNING: FOREACH() ARGUMENT MUST BE OF TYPE ARRAY|OBJECT

Problem/Motivation

On Drupal 10.2.2 after clearing cache these messages appeared.

WARNING: TRYING TO ACCESS ARRAY OFFSET ON VALUE OF TYPE NULL IN DRUPAL\COMPONENTS\TEMPLATE\COMPONENTSREGISTRY->FINDNAMESPACES() (LINE 326 OF MODULES/CONTRIB/COMPONENTS/SRC/TEMPLATE/COMPONENTSREGISTRY.PHP).

WARNING: FOREACH() ARGUMENT MUST BE OF TYPE ARRAY|OBJECT, NULL GIVEN IN DRUPAL\COMPONENTS\TEMPLATE\COMPONENTSREGISTRY->FINDNAMESPACES() (LINE 326 OF MODULES/CONTRIB/COMPONENTS/SRC/TEMPLATE/COMPONENTSREGISTRY.PHP).

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes