doctrine/dbal version issue
Modify a table in the database thanks to migration is not possible without doctrine/dbal dependency. However, the package is installed:
Problem 1
- barryvdh/laravel-ide-helper is locked to version v2.8.1 and an update of this package was not requested.
- barryvdh/laravel-ide-helper v2.8.1 requires doctrine/dbal ~2.3 -> found doctrine/dbal[2.3.0-BETA1, ..., 2.12.x-dev] but it conflicts with your root composer.json require (^3.0).