CodeCeption fails to run Cest class but not individual tests - symfony

Question

This is my Cest class:
<?php
namespace App\Tests\functional;
use App\Entity\AssetsRecord;
use App\Entity\Provider;
use App\Entity\User;
use App\Tests\FunctionalTester;
use App\Tests\Page\Functional\AssetsRecordIndexPage;
class AssetsRecordIndexCest
{
const FIRST_PROVIDER_NAME = "Provider 1";
const SECOND_PROVIDER_NAME = "Provider 2";
const THIRD_PROVIDER_NAME = "Provider 3";
const FIRST_ASSETS_RECORD_VALUE = 1000;
const SECOND_ASSETS_RECORD_VALUE = 2000;
const THIRD_ASSETS_RECORD_VALUE = 3000;
private array $providers;
/**
* #var array <AssetsRecord>
*/
private array $assetsRecords = [];
private User $singleProviderOperator;
private User $doubleProviderOperator;
public function _before(FunctionalTester $I)
{
$this->buildProviders($I);
$I->haveProvidersInDB($this->providers);
$this->buildAssetsRecords($I);
$I->haveAssetsRecordsInDB($this->assetsRecords);
$this->buildOperators($I);
$I->haveInRepository($this->singleProviderOperator);
$I->haveInRepository($this->doubleProviderOperator);
}
// tests
public function shouldNotShowAssetRecordsForNotEnabledProviders(FunctionalTester $I, AssetsRecordIndexPage $page)
{
$I->amLoggedInAs($this->singleProviderOperator);
$page->doesntShow(...$this->getAssetsRecordsIn($this->providers[self::SECOND_PROVIDER_NAME]));
$page->doesntShow(...$this->getAssetsRecordsIn($this->providers[self::THIRD_PROVIDER_NAME]));
$I->amLoggedInAs($this->doubleProviderOperator);
$page->doesntShow(...$this->getAssetsRecordsIn($this->providers[self::FIRST_PROVIDER_NAME]));
}
public function shouldShowAllAssetsRecordsForEnabledProviders(FunctionalTester $I, AssetsRecordIndexPage $page)
{
$I->amLoggedInAs($this->singleProviderOperator);
$page->shows(...$this->getAssetsRecordsIn($this->providers[self::FIRST_PROVIDER_NAME]));
$I->amLoggedInAs($this->doubleProviderOperator);
$page->shows(...$this->getAssetsRecordsIn($this->providers[self::SECOND_PROVIDER_NAME]));
$page->shows(...$this->getAssetsRecordsIn($this->providers[self::THIRD_PROVIDER_NAME]));
}
/**
* #param Provider $provider
* #return array
*/
private function getAssetsRecordsIn(Provider $provider): array
{
return array_filter($this->assetsRecords, fn(AssetsRecord $assetsRecord) => $assetsRecord->getProvider() === $provider);
}
/**
* #param FunctionalTester $I
* #return void
*/
private function buildAssetsRecords(FunctionalTester $I): void
{
$this->assetsRecords[] = $I->buildAssetsRecord($this->providers[self::FIRST_PROVIDER_NAME], self::FIRST_ASSETS_RECORD_VALUE);
$this->assetsRecords[] = $I->buildAssetsRecord($this->providers[self::SECOND_PROVIDER_NAME], self::SECOND_ASSETS_RECORD_VALUE);
$this->assetsRecords[] = $I->buildAssetsRecord($this->providers[self::THIRD_PROVIDER_NAME], self::THIRD_ASSETS_RECORD_VALUE);
}
/**
* #param FunctionalTester $I
* #return void
*/
private function buildProviders(FunctionalTester $I): void
{
$this->providers[self::FIRST_PROVIDER_NAME] = $I->buildProvider(self::FIRST_PROVIDER_NAME);
$this->providers[self::SECOND_PROVIDER_NAME] = $I->buildProvider(self::SECOND_PROVIDER_NAME);
$this->providers[self::THIRD_PROVIDER_NAME] = $I->buildProvider(self::THIRD_PROVIDER_NAME);
}
/**
* #param FunctionalTester $I
* #return void
*/
private function buildOperators(FunctionalTester $I): void
{
$this->singleProviderOperator = $I->buildOperatorUserWithProvidersEnabled(
$this->providers[self::FIRST_PROVIDER_NAME]
);
$this->doubleProviderOperator = $I->buildOperatorUserWithProvidersEnabled(
$this->providers[self::SECOND_PROVIDER_NAME],
$this->providers[self::THIRD_PROVIDER_NAME]
);
}
}
When I run the whole class I get this error:
A new entity was found through the relationship 'App\Entity\AssetsRecord#provider' that was not configured to cascade persist operations for entity: Provider 1. To solve this issue: Either explicitly call EntityManager#persist() on this unknown entity or configure cascade persist this association in the mapping for example #ManyToOne(..,cascade={"persist"}).
But if I run each test separetely it works ok and the tests are succesful...
Any idea why this is happening? Thanks!