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從會(huì)員中心發(fā)布bbs模塊的內(nèi)容的時(shí)候，出現(xiàn)錯(cuò)誤提示，但是時(shí)間上已經(jīng)發(fā)布成功，關(guān)閉錯(cuò)誤提示后也能正常訪問(wèn)發(fā)布的內(nèi)容。

從后臺(tái)發(fā)布也沒(méi)問(wèn)題。請(qǐng)教下怎么破？

錯(cuò)誤提示如下：

An uncaught Exception was encountered

Type: Error

Message: Call to a member function where() on null

Filename: /www/wwwroot/xxxxxx/diy/module/bbs/models/Content_model.php

Line Number: 31

Backtrace:

File: /www/wwwroot/xxxxxx/diy/branch/fqb/C_Model.php

Line: 395

Function: _add_content

File: /www/wwwroot/xxxxxx/diy/branch/fqb/D_Member_Home.php

Line: 249

Function: add

File: /www/wwwroot/xxxxxx/diy/Init.php

Line: 72

Function: require

File: /www/wwwroot/xxxxxx/index.php

Line: 49

Function: require