Error while trying to install Gallery

Error





 Error Type:





 wcf\system\exception\SystemException





 Error Message:





 Can't overwrite unknown table 'gallery1_album'





 File:





 */lib/system/package/plugin/SQLPackageInstallationPlugin.class.php (70)





 Stack Trace:
 #0 */lib/system/package/PackageInstallationDispatcher.class.php (595):
 wcf\system\package\plugin\SQLPackageInstallationPlugin->install()
 #1 */lib/system/package/PackageInstallationDispatcher.class.php (134):
 wcf\system\package\PackageInstallationDispatcher->executePIP([ attributes => , pip => , value => ])
 #2 */lib/acp/action/InstallPackageAction.class.php (72):
 wcf\system\package\PackageInstallationDispatcher->install('a377cb78')
 #3 */lib/action/AbstractDialogAction.class.php (68):
 wcf\acp\action\InstallPackageAction->stepInstall()
 #4 */lib/action/AbstractAction.class.php (47):
 wcf\action\AbstractDialogAction->execute()
 #5 */lib/system/request/Request.class.php (83):
 wcf\action\AbstractAction->__run()
 #6 */lib/system/request/RequestHandler.class.php (94):
 wcf\system\request\Request->execute()
 #7 */acp/index.php (9):
 wcf\system\request\RequestHandler->handle('wcf', true)