I have been installing Opigno in a shared A2Hosting environment. After choosing the language the process drops through to the Setup database screen. However this contains a warning: Please install the TinCanPHP library using Composer, with the command: composer require rusticisoftware/tincan:@stable I do this. Here is the terminal log. clgahost@a2ss28 [~]# composer require rusticisoftware/tincan:@stable ./composer.json has been created Loading composer repositories with package information Updating dependencies (including require-dev) Package operations: 5 installs, 0 updates, 0 removals - Installing willdurand/negotiation (v2.3.1): Downloading (100%) - Installing symfony/polyfill-util (v1.10.0): Downloading (100%) - Installing symfony/polyfill-php56 (v1.10.0): Downloading (100%) - Installing namshi/jose (7.2.3): Downloading (100%) - Installing rusticisoftware/tincan (1.0.0): Downloading (100%) namshi/jose suggests installing phpseclib/phpseclib (Allows to use Phpseclib as crypto engine, use version ^2.0.) Writing lock file Generating autoload files clgahost@a2ss28 [~]# On restarting the install from the beginning, I still get the warning but the install completes. Nevertheless the warning appears again, this time on the home page. Help! I have double-checked. I did not accidentally install the TinCanPHP library on a different server!