Problem 1
    - flarum/pusher v0.1.0-beta.3 requires pusher/pusher-php-server ^2.2 -> satisfiable by pusher/pusher-php-server[2.6.1, 2.6.2, 2.6.3, 2.6.4, v2.2.0, v2.2.1, v2.3.0, v2.4.0, v2.4.1, v2.4.2, v2.5.0, v2.5.0-rc1, v2.5.0-rc2, v2.5.0-rc3, v2.5.0-rc4, v2.6.0].
    - flarum/pusher v0.1.0-beta.5 requires pusher/pusher-php-server ^2.2 -> satisfiable by pusher/pusher-php-server[2.6.1, 2.6.2, 2.6.3, 2.6.4, v2.2.0, v2.2.1, v2.3.0, v2.4.0, v2.4.1, v2.4.2, v2.5.0, v2.5.0-rc1, v2.5.0-rc2, v2.5.0-rc3, v2.5.0-rc4, v2.6.0].
    - flarum/pusher v0.1.0-beta.6 requires pusher/pusher-php-server ^2.2 -> satisfiable by pusher/pusher-php-server[2.6.1, 2.6.2, 2.6.3, 2.6.4, v2.2.0, v2.2.1, v2.3.0, v2.4.0, v2.4.1, v2.4.2, v2.5.0, v2.5.0-rc1, v2.5.0-rc2, v2.5.0-rc3, v2.5.0-rc4, v2.6.0].
    - flarum/pusher v0.1.0-beta.8 requires pusher/pusher-php-server ^2.2 -> satisfiable by pusher/pusher-php-server[2.6.1, 2.6.2, 2.6.3, 2.6.4, v2.2.0, v2.2.1, v2.3.0, v2.4.0, v2.4.1, v2.4.2, v2.5.0, v2.5.0-rc1, v2.5.0-rc2, v2.5.0-rc3, v2.5.0-rc4, v2.6.0].
    - flarum/pusher v0.1.0-beta.8.1 requires pusher/pusher-php-server ^2.2 -> satisfiable by pusher/pusher-php-server[2.6.1, 2.6.2, 2.6.3, 2.6.4, v2.2.0, v2.2.1, v2.3.0, v2.4.0, v2.4.1, v2.4.2, v2.5.0, v2.5.0-rc1, v2.5.0-rc2, v2.5.0-rc3, v2.5.0-rc4, v2.6.0].
    - pusher/pusher-php-server v2.6.0 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server v2.5.0-rc4 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server v2.5.0-rc3 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server v2.5.0-rc2 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server v2.5.0-rc1 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server v2.5.0 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server v2.4.2 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server v2.4.1 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server v2.4.0 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server v2.3.0 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server v2.2.1 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server v2.2.0 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server 2.6.4 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server 2.6.3 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server 2.6.2 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - pusher/pusher-php-server 2.6.1 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - Installation request for flarum/pusher ^0.1.0 -> satisfiable by flarum/pusher[v0.1.0-beta.3, v0.1.0-beta.5, v0.1.0-beta.6, v0.1.0-beta.8, v0.1.0-beta.8.1].

  To enable extensions, verify that they are enabled in your .ini files:
    - /etc/php/7.3/cli/php.ini
    - /etc/php/7.3/cli/conf.d/10-mysqlnd.ini
    - /etc/php/7.3/cli/conf.d/10-opcache.ini
    - /etc/php/7.3/cli/conf.d/10-pdo.ini
    - /etc/php/7.3/cli/conf.d/15-xml.ini
    - /etc/php/7.3/cli/conf.d/20-bz2.ini
    - /etc/php/7.3/cli/conf.d/20-calendar.ini
    - /etc/php/7.3/cli/conf.d/20-ctype.ini
    - /etc/php/7.3/cli/conf.d/20-dom.ini
    - /etc/php/7.3/cli/conf.d/20-exif.ini
    - /etc/php/7.3/cli/conf.d/20-fileinfo.ini
    - /etc/php/7.3/cli/conf.d/20-ftp.ini
    - /etc/php/7.3/cli/conf.d/20-gd.ini
    - /etc/php/7.3/cli/conf.d/20-gettext.ini
    - /etc/php/7.3/cli/conf.d/20-iconv.ini
    - /etc/php/7.3/cli/conf.d/20-json.ini
    - /etc/php/7.3/cli/conf.d/20-mbstring.ini
    - /etc/php/7.3/cli/conf.d/20-mysqli.ini
    - /etc/php/7.3/cli/conf.d/20-pdo_mysql.ini
    - /etc/php/7.3/cli/conf.d/20-phar.ini
    - /etc/php/7.3/cli/conf.d/20-posix.ini
    - /etc/php/7.3/cli/conf.d/20-readline.ini
    - /etc/php/7.3/cli/conf.d/20-shmop.ini
    - /etc/php/7.3/cli/conf.d/20-simplexml.ini
    - /etc/php/7.3/cli/conf.d/20-sockets.ini
    - /etc/php/7.3/cli/conf.d/20-sysvmsg.ini
    - /etc/php/7.3/cli/conf.d/20-sysvsem.ini
    - /etc/php/7.3/cli/conf.d/20-sysvshm.ini
    - /etc/php/7.3/cli/conf.d/20-tokenizer.ini
    - /etc/php/7.3/cli/conf.d/20-wddx.ini
    - /etc/php/7.3/cli/conf.d/20-xmlreader.ini
    - /etc/php/7.3/cli/conf.d/20-xmlwriter.ini
    - /etc/php/7.3/cli/conf.d/20-xsl.ini
    - /etc/php/7.3/cli/conf.d/20-zip.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.
root@vps614228:/var/www/html/public/1#