Column A

Column B
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Fatal error: Uncaught Error: Failed opening required 'header.php' (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\profchwu\webprogramming\教材\PHP程式控制表單\Bootstrap美化\heart\indexBS.php:27 Stack trace: #0 {main} thrown in C:\xampp\htdocs\profchwu\webprogramming\教材\PHP程式控制表單\Bootstrap美化\heart\indexBS.php on line 27