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: 109
Function: get_keyword_cat

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

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

疑難雜症萬事通 - 柴比雪夫定理題目 - 前往 https://www3.stat.sinica.edu.tw/school2016/document/機率統計/機率統計入門(三)_1050729.pdf
疑難雜症萬事通
在網路上遇到任何問題都可以在這邊找找看唷

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您即將離開本站

並前往 https://www3.stat.sinica.edu.tw/school2016/document/%E6%A9%9F%E7%8E%87%E7%B5%B1%E8%A8%88/%E6%A9%9F%E7%8E%87%E7%B5%B1%E8%A8%88%E5%85%A5%E9%96%80(%E4%B8%89)_1050729.pdf

是否確定要離開?