I've gotten this notification:
The following modules are outdated:
Test_Test schema: current version - none, required version - 2.0.0
Test_Test data: current version - none, required version - 2.0.0
bin/magento setup:upgrade I got the error:
Warning: file_get_contents(var/di/setup.ser): failed to open stream: No such file or directory in .vendor/magento/framework/App/ObjectManager/ConfigLoader/Compiled.php on line 28
How can I solve this?