Symfony app with doctrine: MariaDB to Postgres = column cannot be cast automatically to type jsonb

In the process of migrating from Mariadb to postgres 16 with these steps:

docker exec -ti app php bin/console doctrine:database:create
docker exec -ti app php bin/console make:migration
docker exec -ti app php bin/console doctrine:migrations:migrate 

docker run --rm -it --platform linux/amd64 --network app_network -v ./pgloader.load:/pgloader.load dimitri/pgloader:latest 
     pgloader pgloader.load

docker exec -ti app php bin/console doctrine:migrations:sync-metadata-storage

pgloader.load:

LOAD DATABASE
     FROM      mysql://root:root@database/dev
     INTO      pgsql://app:pass@postgres/dev

 WITH include drop, create tables

 ALTER SCHEMA 'dev' RENAME TO 'public';

I am getting into a stuck situation where my json migration is not working

php bin/console make:migration
generates

    #[ORMColumn(type: 'json', nullable: true, options: ["jsonb" => true])]
    private $emoji;

if I look into the migration file:

  $this->addSql('ALTER TABLE blog ALTER emoji TYPE JSONB');

If I connect to the DB and look at the schema it is of type text

now everything works BUT doctrine says that migration has not been executed

if I do

php bin/console doctrine:migrations:migrate 

I get

  SQLSTATE[42804]: Datatype mismatch: 7 ERROR:  column "emoji" cannot be cast automatically to type jsonb  
  HINT:  You might need to specify "USING emoji::jsonb".