php - 请求的包 robmorgan/phinx No version set (parsed as 1.0.0) is satisfiable by robmorgan/phinx[No version set (parsed as 1.0.0)]

Question

尝试安装 phinx 时执行以下命令，并给出如下错误

php composer.phar require robmorgan/phinx

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  Problem 1
    - The requested package robmorgan/phinx No version set (parsed as 1.0.0) is satisfiable by robmorgan/phinx[No version set (parsed as 1.0.0)] but these conflict with your requirements or minimum-stability.