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 - lim f( x) - 前往 https://ocw.nthu.edu.tw/ocw/upload/7/news/L02_2.1, 2.2極限(Limit)的定義 用圖例說明極限、左極限和右極限.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://ocw.nthu.edu.tw/ocw/upload/7/news/L02_2.1,%202.2%E6%A5%B5%E9%99%90(Limit)%E7%9A%84%E5%AE%9A%E7%BE%A9%20%E7%94%A8%E5%9C%96%E4%BE%8B%E8%AA%AA%E6%98%8E%E6%A5%B5%E9%99%90%E3%80%81%E5%B7%A6%E6%A5%B5%E9%99%90%E5%92%8C%E5%8F%B3%E6%A5%B5%E9%99%90.pdf

是否確定要離開？