Why are migrations not installed?

Question

Yii

The database is created, the path to db is specified in the main-local config.
In addition, the fronted and backend domains are also specified in the settings, but the same error occurs in the browser:

In general, the error was resolved by changing the 'dedined' parameters in index.php from 'prod ' to 'dev' and updating composer. But in the process, these messages appeared:
How critical is this?

Answer 1

1) Check if the directory is correct
2) Write in the console "php init" in Development mode