Problem 1
    - Conclusion: don't install laravel/framework v5.8.19
    - Conclusion: don't install laravel/framework v5.8.18
    - Conclusion: don't install laravel/framework v5.8.17
    - Conclusion: don't install laravel/framework v5.8.16
    - Conclusion: don't install laravel/framework v5.8.15
    - Conclusion: don't install laravel/framework v5.8.14
    - Conclusion: don't install laravel/framework v5.8.13
    - Conclusion: don't install laravel/framework v5.8.12
    - Conclusion: don't install laravel/framework v5.8.11
    - Conclusion: don't install laravel/framework v5.8.10
    - Conclusion: don't install laravel/framework v5.8.9
    - Conclusion: don't install laravel/framework v5.8.8
    - Conclusion: don't install laravel/framework v5.8.7
    - Conclusion: don't install laravel/framework v5.8.6
    - Conclusion: don't install laravel/framework v5.8.5
    - Conclusion: don't install laravel/framework v5.8.4
    - Conclusion: don't install laravel/framework v5.8.3
    - Conclusion: don't install laravel/framework v5.8.2
    - Conclusion: don't install laravel/framework v5.8.1
    - laravelcollective/html v5.3.1 requires illuminate/view 5.3.* -> satisfiable by laravel/framework[v5.3.31], illuminate/view[v5.3.0, v5.3.16, v5.3.23, v5.3.4].
    - laravelcollective/html v5.3.1 requires illuminate/view 5.3.* -> satisfiable by laravel/framework[v5.3.31], illuminate/view[v5.3.0, v5.3.16, v5.3.23, v5.3.4].
    - Can only install one of: laravel/framework[v5.8.0, v5.3.31].
    - don't install illuminate/view v5.3.0|don't install laravel/framework v5.8.0
    - don't install illuminate/view v5.3.16|don't install laravel/framework v5.8.0
    - don't install illuminate/view v5.3.23|don't install laravel/framework v5.8.0
    - don't install illuminate/view v5.3.4|don't install laravel/framework v5.8.0
    - Installation request for laravel/framework 5.8.* -> satisfiable by laravel/framework[v5.8.0, v5.8.1, v5.8.10, v5.8.11, v5.8.12, v5.8.13, v5.8.14, v5.8.15, v5.8.16, v5.8.17, v5.8.18, v5.8.19, v5.8.2, v5.8.3, v5.8.4, v5.8.5, v5.8.6, v5.8.7, v5.8.8, v5.8.9].
    - Installation request for laravelcollective/html 5.3.1 -> satisfiable by laravelcollective/html[v5.3.1].

"require": {
        "php": ">=7.3.1",
        "laravel/framework": "5.3.*",
        "laravelcollective/html": "5.3.1",
        "backpack/base": "^0.7.14",
        "backpack/crud": "^3.1",
        "backpack/permissionmanager": "^2.1",
        "backpack/langfilemanager": "^1.0",
        "mikehaertl/phpwkhtmltopdf": "2.2.1",
        "artisaninweb/laravel-soap": "0.3.0.7",