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 - 長直導線磁場公式 - 前往 https://ocw.nthu.edu.tw/ocw/upload/124/news/[電動機械L3c補充教材]KYU_電流的磁效應.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/124/news/[%E9%9B%BB%E5%8B%95%E6%A9%9F%E6%A2%B0L3c%E8%A3%9C%E5%85%85%E6%95%99%E6%9D%90]KYU_%E9%9B%BB%E6%B5%81%E7%9A%84%E7%A3%81%E6%95%88%E6%87%89.pdf

是否確定要離開?