Symfony: The class XYZ was not found in the chain configured namespaces - symfony

Question

Existing questions did not help.
I am still learning Symfony and setting up an existing project. Trying to run doctrine fixtures from my application directory.
./app/console doctrine:fixtures:load --env test
And running this gives me following errors
Error thrown while running command "doctrine:fixtures:load --env test --em default". Message: "The class 'ClientPortal\GenericBundle\Document\Accountant' was not found in the chain configured namespaces _XyzProjectName\CalendarContext\Domain\Model, Integration\GetFeedbackBundle\Model, _XyzProjectName\AccountingProcessContext\Domain\Model, _XyzProjectName\CaseContext\Domain" {"exception":"[object] (Doctrine\Common\Persistence\Mapping\MappingException(code: 0): The class 'ClientPortal\GenericBundle\Document\Accountant' was not found in the chain configured namespaces _XyzProjectName\CalendarContext\Domain\Model, Integration\GetFeedbackBundle\Model, _XyzProjectName\AccountingProcessContext\Domain\Model, _XyzProjectName\CaseContext\Domain at /usr/local/var/www/1800-api/vendor/doctrine/persistence/lib/Doctrine/Common/Persistence/Mapping/MappingException.php:22)
And this exception is being thrown when trying to persist object of class
'ClientPortal\GenericBundle\Document\Accountant'
and here is my doctrine in config.yml
doctrine:
dbal:
driver: pdo_pgsql
host: '%database_host%'
dbname: '%database_name%'
user: '%database_user%'
password: '%database_password%'
orm:
auto_generate_proxy_classes: "%kernel.debug%"
auto_mapping: true
mappings:
CalendarBundle:
prefix: '_XyzProjectName\CalendarContext\Domain\Model'
IntegrationGetFeedbackBundle:
prefix: 'Integration\GetFeedbackBundle\Model'
AccountingProcessBundle:
prefix: '_XyzProjectName\AccountingProcessContext\Domain\Model'
CaseBundle:
prefix: '_XyzProjectName\CaseContext\Domain'
GenericBundle:
type: "annotation"
prefix: 'ClientPortal\GenericBundle\Document'
dir: 'src'
is_bundle: false
The snippet which is raising this exception
$account = new ClientPortal\GenericBundle\Document\Accountant();//full namespace added for clarity - also this file lies in the same directory structure.
$account->setSfAccountantId($accountantId);
$account->setUsername($username);
$manager = new ObjectManager;
$manager->persist( $account ); //This throws the above mentioned exception
My thought is, the file ClientPortal\GenericBundle\Document\Accountant.php is being autoloaded as there is no exception thrown at the time of instantion of its object. But, there is something missing with configuration or mapping because of which doctrine does not know how to persist its object.
[Source code][1] Accountant class
GenericBundle(s) registered under AppKernel
new Website\GenericBundle\WebsiteGenericBundle(),
new Admin\GenericBundle\AdminGenericBundle(),
new ClientPortal\GenericBundle\ClientPortalGenericBundle(),
new TaxApp\GenericBundle\TaxAppGenericBundle(),

Answer 1

So, as I suggested in comments - try to add ClientPortal\GenericBundle\Document\ namespace to mappings in your doctrine config file, like that:
#...
orm:
auto_generate_proxy_classes: "%kernel.debug%"
mappings:
# ...
ClientPortalGenericBundle:
type: annotation
prefix: 'ClientPortal\GenericBundle\Document\'
dir: '%kernel.root_dir%/src/ClientPortal/GenericBundle/Document/'
#is_bundle: false
auto_mapping: true

Answer 2

Had the same issue with Symfony 4 while using multiple database connections. This one https://stackoverflow.com/a/55361742/2540699 helped me to solved my problem.

Answer 3

I bumped into this kind of message in my Symfony 6.1 project, using multiple entity managers, with one of the entity managers specified as default in doctrine.yaml:
doctrine:
orm:
default_entity_manager: general
entity_managers:
general:
# config for general
other_entity_manager:
# config for other entity manager
Everything was fine on my dev environment, but on production I got the error
Uncaught PHP Exception Doctrine\Persistence\Mapping\MappingException: "The class XXX was not found in the chain configured namespaces " at /opt/approot/current/vendor/doctrine/persistence/src/Persistence/Mapping/MappingException.php
Problem seemed to be that I have a when#prod: section in my doctrine.config.yml. It seems I had to repeat the default_entity_manager over there:
when#prod:
doctrine:
orm:
default_entity_manager: general
# other prod-specific configuration
This fixed it for me.
Update: This is probably related to this issue: https://github.com/symfony/symfony/issues/27769