[Cerrado] Error generating .MO files

Antecedentes del problema:
I am trying to generate .MO files using WPML on my site enlace oculto. Since a few days ago, WPML does not generate .MO files. Everything is the same and the permissions on the server are correct. I see the following errors in the logs: AH01071: Got error 'PHP message: PHP Fatal error: Uncaught TypeError: array_slice(): Argument #2 ($offset) must be of type int, string given in enlace oculto trace:n#0 enlace oculto): array_slice()n#1 enlace oculto): WPMLCollectSupportCollection->slice()n#2 enlace oculto): WPMLUtilsPager->getItemsToProcess()n#3 enlace oculto): WPMLUtilsPager->iterate()n#4 /var/www/vhosts/controladores.net/httpdocs/wp-content/plu...', referer: enlace oculto

AH01071: Got error 'PHP message: PHP Warning: realpath(): open_basedir restriction in effect. File(/) is not within the allowed path(s): (/var/www/vhosts/controladores.net/:/tmp/) in enlace oculto on line 106'

AH01071: Got error 'PHP message: PHP Warning: realpath(): open_basedir restriction in effect. File(/) is not within the allowed path(s): (/var/www/vhosts/controladores.net/:/tmp/) in enlace oculto on line 106'

Síntomas:
WPML does not generate .MO files. PHP Fatal error: Uncaught TypeError: array_slice(): Argument #2 ($offset) must be of type int, string given. PHP Warning: realpath(): open_basedir restriction in effect.

Preguntas:
¿Que ocurre o como podemos solucionarlo?