Undefined variable: prev

(1/1) ErrorException

Undefined variable: prev

in Article.php line 77
at HandleExceptions->handleError(8, 'Undefined variable: prev', '/www/wwwroot/biaoxiaoer.com/#.epower/app/Models/Article.php', 77, array('categoryIds' => array(12, 13, 17), 'orderArticles' => object(Collection), 'orderArticle' => object(Article), 'key' => 8))in Article.php line 77
at Article->getSeo()in Seo.php line 175
at Seo::articleDetail(object(Request))in Seo.php line 82
at Seo::getSeoInner('notices/detail', object(Request))in Seo.php line 52
at Seo::getSeo('notices/detail', object(Request))in IndexController.php line 109
at IndexController->index(object(Request), 'notices', 'detail')
at call_user_func_array(array(object(IndexController), 'index'), array(object(Request), 'a' => 'notices', 'b' => 'detail'))in Controller.php line 54
at Controller->callAction('index', array(object(Request), 'a' => 'notices', 'b' => 'detail'))in ControllerDispatcher.php line 45
at ControllerDispatcher->dispatch(object(Route), object(IndexController), 'index')in Route.php line 219
at Route->runController()in Route.php line 176
at Route->run()in Router.php line 723
at Router->Illuminate\Routing\{closure}(object(Request))in Pipeline.php line 30
at Pipeline->Illuminate\Routing\{closure}(object(Request))in TransformsRequest.php line 21
at TransformsRequest->handle(object(Request), object(Closure))in Pipeline.php line 164
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in SwitchAuthGuard.php line 26
at SwitchAuthGuard->handle(object(Request), object(Closure), 'user')in Pipeline.php line 164
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in CheckWebsite.php line 39
at CheckWebsite->handle(object(Request), object(Closure))in Pipeline.php line 164
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in EpowerSession.php line 39
at EpowerSession->handle(object(Request), object(Closure))in Pipeline.php line 164
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in Pipeline.php line 104
at Pipeline->then(object(Closure))in Router.php line 725
at Router->runRouteWithinStack(object(Route), object(Request))in Router.php line 700
at Router->runRoute(object(Request), object(Route))in Router.php line 666
at Router->dispatchToRoute(object(Request))in Router.php line 655
at Router->dispatch(object(Request))in Kernel.php line 176
at Kernel->Illuminate\Foundation\Http\{closure}(object(Request))in Pipeline.php line 30
at Pipeline->Illuminate\Routing\{closure}(object(Request))in Sinicization.php line 22
at Sinicization->handle(object(Request), object(Closure))in Pipeline.php line 164
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in TransformsRequest.php line 21
at TransformsRequest->handle(object(Request), object(Closure))in Pipeline.php line 164
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in Pipeline.php line 104
at Pipeline->then(object(Closure))in Kernel.php line 151
at Kernel->sendRequestThroughRouter(object(Request))in Kernel.php line 116
at Kernel->handle(object(Request))in Router.php line 184
at Router->Illuminate\Routing\{closure}('9')in Route.php line 205
at Route->runCallable()in Route.php line 179
at Route->run()in Router.php line 723
at Router->Illuminate\Routing\{closure}(object(Request))in Pipeline.php line 30
at Pipeline->Illuminate\Routing\{closure}(object(Request))in SwitchAuthGuard.php line 26
at SwitchAuthGuard->handle(object(Request), object(Closure), 'user')in Pipeline.php line 164
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in CheckWebsite.php line 39
at CheckWebsite->handle(object(Request), object(Closure))in Pipeline.php line 164
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in EpowerSession.php line 39
at EpowerSession->handle(object(Request), object(Closure))in Pipeline.php line 164
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in Pipeline.php line 104
at Pipeline->then(object(Closure))in Router.php line 725
at Router->runRouteWithinStack(object(Route), object(Request))in Router.php line 700
at Router->runRoute(object(Request), object(Route))in Router.php line 666
at Router->dispatchToRoute(object(Request))in Router.php line 655
at Router->dispatch(object(Request))in Kernel.php line 176
at Kernel->Illuminate\Foundation\Http\{closure}(object(Request))in Pipeline.php line 30
at Pipeline->Illuminate\Routing\{closure}(object(Request))in Sinicization.php line 22
at Sinicization->handle(object(Request), object(Closure))in Pipeline.php line 164
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in TransformsRequest.php line 21
at TransformsRequest->handle(object(Request), object(Closure))in Pipeline.php line 164
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request))in Pipeline.php line 104
at Pipeline->then(object(Closure))in Kernel.php line 151
at Kernel->sendRequestThroughRouter(object(Request))in Kernel.php line 116
at Kernel->handle(object(Request))in index.php line 57