To check what error You have.
You can check log file located at /storage/logs/laravel.log
You can also change APP_DEBUG=true in .env file and remove cache.
Cache is located in /storage/framework/cache/data/*
And try to install application again.
Please send also information what host do You have.
Afk. it’s not recommended to use host without shell access, You won’t be able to check log file or use artisan commands.