Call to a member function addEagerConstraints() on null
Call to a member function addEagerConstraints() on null 加上 return 就行了 ...
原文：Call to a member function assign() on null
Thinkphp： 在子控制器里面寫了一個構造函數，如下 構造函數 public function construct echo 結果頁面報錯了 gt Call to a member function assign on null 然后去繼承的父類里面一看，原來里面寫了一個 initialize 的方法，原來是子類的構造函數覆蓋了父類的，所以報錯了，所以需要繼承一下父類的構造函數： parent ...
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