Deploying Laravel on Heroku "PDOException in Connector.php line 55" (sqlite) - php

Question

I tried to deploy my first Laravel project on Heroku. It's a small project, so I'm using SQLite as my database. After deploying the project using git push heroku master, and clicking on one of the links that retrieves data from the database to display an index, I am getting the following error:
PDOException in Connector.php line 55: could not find driver
in Connector.php line 55
at PDO->__construct('sqlite:/app/database/database.sqlite', null, null, array('0', '2', '0', false, false)) in Connector.php line 55
at Connector->createConnection('sqlite:/app/database/database.sqlite', array('driver' => 'sqlite', 'database' => '/app/database/database.sqlite', 'prefix' => '', 'name' => 'sqlite'), array('0', '2', '0', false, false)) in SQLiteConnector.php line 37
at SQLiteConnector->connect(array('driver' => 'sqlite', 'database' => '/app/database/database.sqlite', 'prefix' => '', 'name' => 'sqlite')) in ConnectionFactory.php line 61
at ConnectionFactory->Illuminate\Database\Connectors\{closure}()
at call_user_func(object(Closure)) in Connection.php line 875
at Connection->getPdo() in Connection.php line 743
at Connection->reconnectIfMissingConnection() in Connection.php line 628
at Connection->run('select * from "certificates" order by "updated_at" desc', array(), object(Closure)) in Connection.php line 342
at Connection->select('select * from "certificates" order by "updated_at" desc', array(), true) in Builder.php line 1562
at Builder->runSelect() in Builder.php line 1548
at Builder->get(array('*')) in Builder.php line 610
at Builder->getModels(array('*')) in Builder.php line 316
at Builder->get() in CertificatesController.php line 25
at CertificatesController->index()
at call_user_func_array(array(object(CertificatesController), 'index'), array()) in Controller.php line 80
at Controller->callAction('index', array()) in ControllerDispatcher.php line 146
at ControllerDispatcher->call(object(CertificatesController), object(Route), 'index') in ControllerDispatcher.php line 94
at ControllerDispatcher->Illuminate\Routing\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 52
at Pipeline->Illuminate\Routing\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 102
at Pipeline->then(object(Closure)) in ControllerDispatcher.php line 96
at ControllerDispatcher->callWithinStack(object(CertificatesController), object(Route), object(Request), 'index') in ControllerDispatcher.php line 54
at ControllerDispatcher->dispatch(object(Route), object(Request), 'app\Http\Controllers\CertificatesController', 'index') in Route.php line 174
at Route->runController(object(Request)) in Route.php line 140
at Route->run(object(Request)) in Router.php line 724
at Router->Illuminate\Routing\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 52
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in VerifyCsrfToken.php line 64
at VerifyCsrfToken->handle(object(Request), object(Closure))
at call_user_func_array(array(object(VerifyCsrfToken), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in ShareErrorsFromSession.php line 49
at ShareErrorsFromSession->handle(object(Request), object(Closure))
at call_user_func_array(array(object(ShareErrorsFromSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in StartSession.php line 62
at StartSession->handle(object(Request), object(Closure))
at call_user_func_array(array(object(StartSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in AddQueuedCookiesToResponse.php line 37
at AddQueuedCookiesToResponse->handle(object(Request), object(Closure))
at call_user_func_array(array(object(AddQueuedCookiesToResponse), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in EncryptCookies.php line 59
at EncryptCookies->handle(object(Request), object(Closure))
at call_user_func_array(array(object(EncryptCookies), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
at Pipeline->Illuminate\Routing\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 102
at Pipeline->then(object(Closure)) in Router.php line 726
at Router->runRouteWithinStack(object(Route), object(Request)) in Router.php line 699
at Router->dispatchToRoute(object(Request)) in Router.php line 675
at Router->dispatch(object(Request)) in Kernel.php line 246
at Kernel->Illuminate\Foundation\Http\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 52
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in CheckForMaintenanceMode.php line 44
at CheckForMaintenanceMode->handle(object(Request), object(Closure))
at call_user_func_array(array(object(CheckForMaintenanceMode), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
at Pipeline->Illuminate\Routing\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 102
at Pipeline->then(object(Closure)) in Kernel.php line 132
at Kernel->sendRequestThroughRouter(object(Request)) in Kernel.php line 99
at Kernel->handle(object(Request)) in index.php line 53
Anyone knows how I may be able to resolve this problem? Many thanks in advance! :)

Answer 1

I've also encountered this on Heroku.
I added:
{
"require": {
"ext-pdo_sqlite": "*"
}
}

Answer 2

Sqlite is setup as a shared extension on Heroku, but has to be enabled through composer.json i believe.
Try adding:
{
"require": {
"sqlite3": "*"
}
}
To your composer.json file.