Problem with CollectionType form in Symfony 4

I've problem with Collectiontype in Symfony 4.I try to save some informations in many table on database.My saving cascade is: 1 releve contains 1 carriere contains lots of infoCarriere contains lots of pointsTo save this information, i use a specific form with collectionType:My CarriereRelaiType:

public function buildForm(FormBuilderInterface $builder, array $options)    {        $builder            ->add("caisses", CollectionType::class, ['entry_type' => CarriereType::class,'allow_add' => true,'allow_delete' => true,'attr' => ['class' => 'col-sm-2']            ]);    }    public function configureOptions(OptionsResolver $resolver)    {        $resolver->setDefaults(['data_class' => null,'empty_data' => null        ]);    }

My InfoCarriereRelaiType:

public function buildForm(FormBuilderInterface $builder, array $options)    {        $builder            ->add("infoCarrieres", CollectionType::class, ['entry_type' => InfoCarriere::class,'allow_add' => true,'allow_delete' => true,'attr' => ['class' => 'col-sm-2']            ]);    }    public function configureOptions(OptionsResolver $resolver)    {        $resolver->setDefaults(['data_class' => null,'empty_data' => null        ]);    }

and i've the same for points.Show a part of my controller:

// creation carriere$recupCaisse = [];        foreach ($dispatch as $keyDispatch => $valueDispatch){            if ($keyDispatch != "dateDoc"){                $recupCaisse[][$keyDispatch] = $valueDispatch;            }        }        $compteurCaisse = count($recupCaisse);        for ($i=0; $i<$compteurCaisse; $i++){            // creation de Carriere            $dataCarriere["caisses"][$i] = new Carriere();            foreach ($recupCaisse[$i] as $keyCaisse => $valueCaisse){                // recuperation des noms de caisse                $caisse = $caisseRepository->findByAcronyme(strtoupper($keyCaisse));            }            $dataCarriere["caisses"][$i]->setCaisse($caisse[0]);            // recuperation des numeros             foreach ($valueCaisse as $keyDetail => $valueDetail) {                if ($keyDetail == "numero") {                    $dataCarriere["caisses"][$i]->setNumero($valueDetail);                }            }        }       dump($dataCarriere);        $formCarriere = $this->createForm(CarriereRelaiType::class, $dataCarriere);        $formCarriere→handleRequest($request);for ($i=0; $i<$compteurCaisse; $i++){            foreach ($recupCaisse[$i] as $keyDetail => $valueDetail){                // ajout infocarriere                foreach ($valueDetail as $keyTempInfoCarriere => $valueTempoInfoCarriere){                    $dataInfoCarriere[$keyDetail][$keyTempInfoCarriere] = new InfoCarriere();                    if (is_array($valueTempoInfoCarriere)){                        foreach ($valueTempoInfoCarriere as $key => $value){                            if ($key != "numeroDossier"){                                if ($key == 'annee'){                                    $dataInfoCarriere[$keyDetail][$keyTempInfoCarriere]->setAnnee($value);                                }elseif ($key == 'debut'){                                    $dataInfoCarriere[$keyDetail][$keyTempInfoCarriere]->setDebut($value);                                }elseif ($key == 'fin'){                                    $dataInfoCarriere[$keyDetail][$keyTempInfoCarriere]->setFin($value);                                }elseif ($key == 'naturePeriode'){                                    $dataInfoCarriere[$keyDetail][$keyTempInfoCarriere]->setStatus($value);                                }                            }                        }                    }                    }            }        }dump($dataInfoCarriere);$formInfoCarriere = $this->createForm(InfoCarriereRelaiType::class, $dataInfoCarriere);$formInfoCarriere->handleRequest($request);

To show on my form with twig and save Carriere is ok.I want to show all my form with all informations but i've this error message:

Could not load type "App\Entity\InfoCarriere": class does not implement "Symfony\Component\Form\FormTypeInterface".

On my dump ($dataCarriere & $dataInfoCarriere), i have the same structure but, in the $dataCarriere i have juste 1 entry:

array:1 [▼"caisses" => array:4 [▼    0 => App\Entity\Carriere {#1154 ▶}    1 => App\Entity\Carriere {#1801 ▶}    2 => App\Entity\Carriere {#1860 ▶}    3 => App\Entity\Carriere {#1891 ▶}  ]]

and in the $dataInfoCarriere i have 4 entries:

array:4 [▼"truc" => array:35 [▶]"bidule" => array:14 [▶]"machin" => array:8 [▶]"chose" => array:23 [▶]]

(a part of 1 entry)

array:4 [▼"truc" => array:35 [▼    11 => App\Entity\InfoCarriere {#1943 ▶}    12 => App\Entity\InfoCarriere {#2090 ▶}    13 => App\Entity\InfoCarriere {#2105 ▶}    14 => App\Entity\InfoCarriere {#2107 ▶}    15 => App\Entity\InfoCarriere {#2326 ▶}    16 => App\Entity\InfoCarriere {#2398 ▶}    17 => App\Entity\InfoCarriere {#2401 ▶}    18 => App\Entity\InfoCarriere {#2403 ▶}

I tried to change my $dataInfoCarriere entry with just one, but the same error message.I think i forgot something but i don't know what.thank you in advance for your help