repeate open a db file then execute query will cause file is not a database error

[navono]

Before using go-sqlcipher, I was using gorm + sqilte3 and everything was working fine.
After I switched from sqlite3 to go-sqlcipher, I get an error at runtime like this:

file is not a database

When do some query like:

db.Where().Find()

Where did this go wrong? any clue to resolve this probelem?