No, an SQLite object created in one thread should not be used in another thread. This is because SQLite connections are not thread-safe and can lead to unexpected behavior or errors. It is recommended to create a separate SQLite object for each thread that needs to interact with the database.
As for the specific code causing issues, without seeing the code it is difficult to pinpoint the exact problem. However, if you are trying to share an SQLite object between threads, this could be the source of your problem. It is best to create a new SQLite connection in each thread that needs to access the database.