PHP Warning – yiibaseErrorException
Declaration of craftwebtwigEnvironment::compileSource(Twig_Source $source) should be compatible with TwigEnvironment::compileSource(TwigSource $source)

{
  "require": {
    "craftcms/cms": "3.1.8",
    "vlucas/phpdotenv": "^2.4.0",
    "aelvan/imager": "v2.1.4",
    "nystudio107/craft-seomatic": "3.1.40",
    "craftcms/redactor": "2.3.1",
    "verbb/feed-me": "dev-craft-3",
    "doublesecretagency/craft-cpcss": "2.1.0",
    "verbb/expanded-singles": "1.0.6",
    "lukeyouell/craft-readtime": "1.4.0",
    "lukeyouell/craft-queue-manager": "1.1.0",
    "verbb/feed-me-pro": "3.0.4",
    "craftcms/aws-s3": "1.1.2",
    "trendyminds/buster": "1.0.5",
    "verbb/field-manager": "2.0.5"
  },
  "autoload": {
    "psr-4": {
      "modules\": "modules/"
    }
  },
  "config": {
    "optimize-autoloader": true,
    "platform": {
      "php": "7.0"
    }
  },
  "scripts": {
    "post-root-package-install": [
      "@php -r "file_exists('.env') || copy('.env.example', '.env');""
    ]
  }
}