Simba, Чё 7.2 версия уже устарела?
ua0sqq@ua0sqq-Aspire-3810T:~/domains/next.l$ composer update
PHP Parse error: syntax error, unexpected 'string' (T_STRING), expecting function (T_FUNCTION) or const (T_CONST) in /home/ua0sqq/domains/next.l/system/vendor/ocramius/package-versions/src/PackageVersions/Installer.php on line 33