mews/captcha[1.0.1, ..., 1.0.2] require illuminate/support ~4 -> found illuminate/support[v4.0.0-BETA2, ..., 4.2.x-dev] but these were not loaded, likely because it conflicts with another require.
Root composer.json requires mews/captcha ^1.0 -> satisfiable by mews/captcha[1.0.1, 1.0.2].
You can also try re-running composer require with an explicit version constraint, e.g. "composer require mews/captcha:*" to figure out if any version is installable, or "composer require mews/captcha:^2.1" if you know which you need.
Problem 1
You can also try re-running composer require with an explicit version constraint, e.g. "composer require mews/captcha:*" to figure out if any version is installable, or "composer require mews/captcha:^2.1" if you know which you need.