[B2-SH][Pages][Import&Export database] More issues

• I could import v4 databases to v5 without issues
• Export B2 databases works fine
• Import the B2 database just exported to testsite with same config make an error

TypeError: IPS\cms\Databases::get_template_display(): Return value must be of type string, null returned (0)
#0 xxxx.se/system/Patterns/ActiveRecord.php(360): IPS\cms\Databases->get_template_display()
#1 xxx.se/applications/cms/modules/admin/databases/databases.php(910): IPS\Patterns\ActiveRecord->__get()
#2 xxx.se/system/Helpers/MultipleRedirect/MultipleRedirect.php(98): IPS\cms\modules\admin\databases\databases->IPS\cms\modules\admin\databases\{closure}()
#3 xxx.se/applications/cms/modules/admin/databases/databases.php(327): IPS\Helpers\MultipleRedirect->__construct()
#4 xxx.se/system/Dispatcher/Controller.php(128): IPS\cms\modules\admin\databases\databases->import()
#5 xxx.se/system/Node/Controller.php(117): IPS\Dispatcher\Controller->execute()
#6 xxx.se/applications/cms/modules/admin/databases/databases.php(97): IPS\Node\Controller->execute()
#7 xxx.se/system/Dispatcher/Dispatcher.php(169): IPS\cms\modules\admin\databases\databases->execute()
#8 xxx.se/admin/index.php(15): IPS\Dispatcher->run()
#9 {main}

Backtrace

#0 /home/ipsuiteh/domains/ic5.se/init.php(827): IPS\Log::log()
#1 [internal function]: IPS\IPS::exceptionHandler()
#2 {main}