Unhandled TypeError (code: 0)

» \TypeError

nanoapp\session\store\SessionFilestore::load(): Return value must be of type nanoapp\session\Session, false returned

Thrown in: /opt/vendor/continue/nano-app/src/session/store/SessionFilestore.php (97)
 #0 /opt/vendor/continue/nano-app/src/app/NanoApp.php(186): nanoapp\session\store\SessionFilestore->load()
 #1 /opt/vendor/continue/nano-app/src/app/NanoApp.php(159): nanoapp\app\NanoApp->loadSession()
 #2 /opt/src/app/SosApp.php(130): nanoapp\app\NanoApp->__construct()
 #3 /opt/www/index.php(66): sos\app\SosApp->__construct()
 #4 {main}