Root composer.json requires shopware/platform ~6.4.7.0, it is satisfiable by shopware/platform[6.4.7.0-dev]?

Dear All, I am getting following error while uploading the Plugin in Store. Shopware 6–
my composer and I removed the data just left the blanks.

=========================Composer.json configuration is=======================
{
„name“: „“,
„description“: „“,
„version“: „3.0.3“,
„license“: „MIT“,
„authors“: [
{
„name“: „“,
„role“: „Manufacturer“,
„homepage“: „“
}
],
„require“: {
„shopware/core“: „",
„shopware/storefront“: "

},
„type“: „shopware-platform-plugin“,
„extra“: {
„shopware-plugin-class“: „Bc\FaqManager\FaqManager“,
„plugin-icon“: „src/Resources/config/plugin.png“,
„copyright“: „(c) by xyz“,
„label“: {
„de-DE“: „Manager“,
„en-GB“: " Manager "
},
„description“: {
„de-DE“: „“,
„en-GB“: „“
},
„manufacturerLink“: {
„de-DE“: „“,
„en-GB“: „“
},
„supportLink“: {
„de-DE“: „“,
„en-GB“: „“
}
},
„autoload“: {
„psr-4“: {
„Bc\FaqManager\“: „src/“
}
}
}

=============================Store Warnings======================
Warnings of the static code analysis:
The command „composer install“ failed.

Exit Code: 2(Misuse of shell builtins)

Working directory: /tmp/plugincheck/BrandCrockFaqManager

Output:

Error Output:

No composer.lock file present. Updating dependencies to latest instead of installing from lock file.
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Root composer.json requires shopware/platform ~6.4.7.0, it is satisfiable by shopware/platform[6.4.7.0-dev] from composer repo but shopware/platform[dev-trunk, 6.4.x-dev (alias of dev-trunk)] from path repo (platform) has higher repository priority. The packages with higher priority do not match your constraint and are therefore not installable.

Running update with --no-dev does not mean require-dev is ignored, it just means the packages will not be installed. If dev requirements are blocking the update you have to resolve those problems.

Thanks,
Regards,