update

src/plugins/nonebot_bison/config/migrate/env.py

@@ -9,13 +9,15 @@ config = context.config
 
 # Interpret the config file for Python logging.
 # This line sets up loggers basically.
-fileConfig(config.config_file_name)
+fileConfig(config.config_file_name)  # type:ignore
 
 # add your model's MetaData object here
 # for 'autogenerate' support
 # from myapp import mymodel
 # target_metadata = mymodel.Base.metadata
-target_metadata = None
+from ..db_model import Base
+
+target_metadata = Base.metadata
 
 # other values from the config, defined by the needs of env.py,
 # can be acquired: