Yii2 Bad Request (#400) posting a form in a Docker container

Question

I have a docker container based on php:7.2.34-apache. I have created a model and a CRUD via Gii. The form for the update of the model doesn't work because when I POST the system thows "Bad Request (#400) Unable to verify your data submission." error.

If I set 'enableCsrfValidation' => false, the pages reloads without saving.

The form is made with ActiveForm so in the page there is the hidden input with the csrf field valorized.

Any idea about the issue?