Hi @pnamgay
This issue comes because of the MySQL version.
We are working on it and this issue will be resolved in our next version of QloApps releasing soon.

But for now, please replace the attached file on this path: hotelcommerce/install/data
Then try to install QloApps again, you will be able to install QloApps successfully.

0_1551259388625_db_structure.sql