Problems running latest code with PHP 7.0 / Laravel 5.5

[amjadniazi48]

After migrating my project to wintercms from octobercms I am facing these problems with composer update command
I am using xampp with PHP 7.4

 ` Problem 1
    - Root composer.json requires winter/storm dev-develop as 1.1.999 -> satisfiable by winter/storm[dev-develop].
    - winter/storm dev-develop requires php >=7.2.9 -> your php version (7.0; overridden via config.platform, actual: 7.4.13) does not satisfy that requirement.
  Problem 2
    - Root composer.json requires winter/wn-system-module dev-develop as 1.1.999 -> satisfiable by winter/wn-system-module[dev-develop].
    - winter/wn-system-module dev-develop requires php >=7.2 -> your php version (7.0; overridden via config.platform, actual: 7.4.13) does not satisfy that requirement.
  Problem 3
    - Root composer.json requires winter/wn-backend-module dev-develop as 1.1.999 -> satisfiable by winter/wn-backend-module[dev-develop].
    - winter/wn-backend-module dev-develop requires php >=7.2 -> your php version (7.0; overridden via config.platform, actual: 7.4.13) does not satisfy that requirement.
  Problem 4
    - Root composer.json requires winter/wn-cms-module dev-develop as 1.1.999 -> satisfiable by winter/wn-cms-module[dev-develop].
    - winter/wn-cms-module dev-develop requires php >=7.2 -> your php version (7.0; overridden via config.platform, actual: 7.4.13) does not satisfy that requirement.
  Problem 5
    - Root composer.json requires wikimedia/composer-merge-plugin dev-master -> satisfiable by wikimedia/composer-merge-plugin[dev-master].
    - wikimedia/composer-merge-plugin dev-master requires php >=7.2.0 -> your php version (7.0; overridden via config.platform, actual: 7.4.13) does not satisfy that requirement.

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific
versions.`

[rubenvanerk]

Seems like you set config.platform in your composer.json to 7.0. That setting overrides the version you're using (7.4).
Either change this value to 7.4 or remove it. Then it should work.

[amjadniazi48]

Its not working i think the problem is with laravel version because I m using laravel version 5.5, now i m getting these problem after changing the value to 7.4

Problem 1
    - Root composer.json requires winter/storm dev-develop as 1.1.999 -> satisfiable by winter/storm[dev-develop].
    - winter/storm dev-develop requires laravel/framework ~6.0 -> found laravel/framework[v6.0.0, ..., 6.x-dev] but it conflicts
with your root composer.json require (5.5.*).
  Problem 2
    - Root composer.json requires winter/wn-system-module dev-develop as 1.1.999 -> satisfiable by winter/wn-system-module[dev-develop].
    - winter/wn-system-module dev-develop requires laravel/framework ~6.0 -> found laravel/framework[v6.0.0, ..., 6.x-dev] but it conflicts with your root composer.json require (5.5.*).
  Problem 3
    - Root composer.json requires winter/wn-backend-module dev-develop as 1.1.999 -> satisfiable by winter/wn-backend-module[dev-develop].
    - winter/wn-backend-module dev-develop requires laravel/framework ~6.0 -> found laravel/framework[v6.0.0, ..., 6.x-dev] but it conflicts with your root composer.json require (5.5.*).
  Problem 4
    - Root composer.json requires winter/wn-cms-module dev-develop as 1.1.999 -> satisfiable by winter/wn-cms-module[dev-develop].
    - winter/wn-cms-module dev-develop requires laravel/framework ~6.0 -> found laravel/framework[v6.0.0, ..., 6.x-dev] but it conflicts with your root composer.json require (5.5.*).

[rubenvanerk]

That seems to be the issue. You should upgrade Laravel to 6. Check out the upgrade notes on how to do that: https://github.com/wintercms/meta/blob/master/l6-upgrade-notes.md