How to use LIKE clause in DQL? - symfony

Question

I'm trying to create a query using the LIKE clause in Doctrine Query Language.
My query is as following:
public function findByName($keyword){
$em = $this->getEntityManager();
$consulta = $em->createQuery('SELECT o FROM AppBundle:Items o WHERE o.name LIKE :keyword');
$consulta->setParameter('keyword', '%'.$keyword.'%');
return $consulta->getResult();
}
I'm getting the next errors:
Notice: Trying to access array offset on value of type null
While if I do the same query but instead of LIKE i simply use =, the query executes correctly and I get the results. What could I be doing wrong here?
Thanks for the help.
Debug info:
object(Doctrine\ORM\Query)#901 (24) {
["_state":"Doctrine\ORM\Query":private]=> int(2)
["_parsedTypes":"Doctrine\ORM\Query":private]=> array(0) { }
["_dql":"Doctrine\ORM\Query":private]=> string(57) "SELECT o FROM
AppBundle:Coche o WHERE o.modelo = :keyword"
["_parserResult":"Doctrine\ORM\Query":private]=> NULL
["_firstResult":"Doctrine\ORM\Query":private]=> NULL
["_maxResults":"Doctrine\ORM\Query":private]=> NULL
["_queryCache":"Doctrine\ORM\Query":private]=> NULL
["_expireQueryCache":"Doctrine\ORM\Query":private]=> bool(false)
["_queryCacheTTL":"Doctrine\ORM\Query":private]=> NULL
["_useQueryCache":"Doctrine\ORM\Query":private]=> bool(true)
["parameters":protected]=>
object(Doctrine\Common\Collections\ArrayCollection)#946 (1) {
["elements":"Doctrine\Common\Collections\ArrayCollection":private]=>
array(1) { [0]=> object(Doctrine\ORM\Query\Parameter)#913 (3) {
["name":"Doctrine\ORM\Query\Parameter":private]=> string(7) "keyword"
["value":"Doctrine\ORM\Query\Parameter":private]=> int(1)
["type":"Doctrine\ORM\Query\Parameter":private]=> string(7) "integer"
} } } ["_resultSetMapping":protected]=> NULL ["_em":protected]=>
object(Doctrine\ORM\EntityManager)#740 (11) {
["config":"Doctrine\ORM\EntityManager":private]=>
object(Doctrine\ORM\Configuration)#564 (1) {
["_attributes":protected]=> array(14) { ["entityNamespaces"]=>
array(1) { ["AppBundle"]=> string(16) "AppBundle\Entity" }
["metadataCacheImpl"]=> object(Doctrine\Common\Cache\ArrayCache)#566
(6) { ["data":"Doctrine\Common\Cache\ArrayCache":private]=> array(0) {
} ["hitsCount":"Doctrine\Common\Cache\ArrayCache":private]=> int(0)
["missesCount":"Doctrine\Common\Cache\ArrayCache":private]=> int(0)
["upTime":"Doctrine\Common\Cache\ArrayCache":private]=>
int(1598445780)
["namespace":"Doctrine\Common\Cache\CacheProvider":private]=>
string(79)
"sf_orm_default_061d80f6e71229c042b639f23634872f7045193d957ba060c640bf0458feeae2"
["namespaceVersion":"Doctrine\Common\Cache\CacheProvider":private]=>
NULL } ["queryCacheImpl"]=>
public function LikeExpression()
{
$stringExpr = $this->StringExpression();
$not = false;
if ($this->lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$not = true;
}
$this->match(Lexer::T_LIKE);
if ($this->lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
$this->match(Lexer::T_INPUT_PARAMETER);
$stringPattern = new AST\InputParameter($this->lexer->token['value']);
} else {
$stringPattern = $this->StringPrimary();
}
$escapeChar = null;
//////// Highlighted error area//////////
if ($this->lexer->lookahead['type'] === Lexer::T_ESCAPE) {
$this->match(Lexer::T_ESCAPE);
$this->match(Lexer::T_STRING);
$escapeChar = new AST\Literal(AST\Literal::STRING, $this->lexer->token['value']);
}
////////////////////////////////////////
$likeExpr = new AST\LikeExpression($stringExpr, $stringPattern, $escapeChar);
$likeExpr->not = $not;
return $likeExpr;
}