// Archivo: update_counter.php
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<b>Warning</b>:  include(config.php): Failed to open stream: No such file or directory in <b>D:\xampp\htdocs\update_conunter.php</b> on line <b>3</b><br />
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<b>Warning</b>:  include(): Failed opening 'config.php' for inclusion (include_path='D:\xampp\php\PEAR') in <b>D:\xampp\htdocs\update_conunter.php</b> on line <b>3</b><br />
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<b>Warning</b>:  Undefined array key "id" in <b>D:\xampp\htdocs\update_conunter.php</b> on line <b>5</b><br />
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<b>Warning</b>:  Undefined variable $conexion in <b>D:\xampp\htdocs\update_conunter.php</b> on line <b>28</b><br />
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<b>Fatal error</b>:  Uncaught Error: Call to a member function prepare() on null in D:\xampp\htdocs\update_conunter.php:28
Stack trace:
#0 {main}
  thrown in <b>D:\xampp\htdocs\update_conunter.php</b> on line <b>28</b><br />