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Function: _error_handler

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A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type null

Filename: models/Site_model.php

Line Number: 233

Backtrace:

File: /var/www/html/KOL/voice/application/models/Site_model.php
Line: 233
Function: _error_handler

File: /var/www/html/KOL/voice/application/controllers/Exitpage.php
Line: 110
Function: get_keyword_cat

File: /var/www/html/KOL/voice/public/index.php
Line: 319
Function: require_once

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並前往 https://researcher20.com/2009/03/28/%E5%A6%82%E4%BD%95%E5%88%86%E6%9E%90%E5%89%8D%E3%80%81%E5%BE%8C%E6%B8%AC-%E9%80%B2%E6%AD%A5%E5%88%86%E6%95%B8analysis-of-pre-test-post-test-gain-scores/

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