Failed to create the tutorial-DKU_TUT_VIZ102_WINDOW

When import projects from DSS tutorial(Windows recipe-SQL based), something went wrong and the import failed. My dataiku DSS is on Mac, and using postgreSQL. Please help.

Tutorial project import failed: {"usedProjectKey":"DKU_TUT_VIZ102_WINDOW","neededAMigration":false,"usedConnections":[],"messages":[{"severity":"ERROR","isFatal":true,"code":"ERR_BUNDLE_ACTIVATE_MISSING_CONNECTION","title":"Missing connection","details":"Connection missing for dataset transactions_joined (not remapped): postgresql (PostgreSQL)","message":"Missing connection: Connection missing for dataset transactions_joined (not remapped): postgresql (PostgreSQL)"},{"severity":"ERROR","isFatal":true,"code":"ERR_BUNDLE_ACTIVATE_MISSING_CONNECTION","title":"Missing connection","details":"Connection missing for dataset transactions_known_prepared (not remapped): postgresql (PostgreSQL)","message":"Missing connection: Connection missing for dataset transactions_known_prepared (not remapped): postgresql (PostgreSQL)"},{"severity":"ERROR","isFatal":true,"code":"ERR_BUNDLE_ACTIVATE_MISSING_CONNECTION","title":"Missing connection","details":"Connection missing for dataset transactions_joined_prepared (not remapped): postgresql (PostgreSQL)","message":"Missing connection: Connection missing for dataset transactions_joined_prepared (not remapped): postgresql (PostgreSQL)"},{"severity":"ERROR","isFatal":true,"code":"ERR_BUNDLE_ACTIVATE_MISSING_CONNECTION","title":"Missing connection","details":"Connection missing for dataset merchant_info_copy (not remapped): postgresql (PostgreSQL)","message":"Missing connection: Connection missing for dataset merchant_info_copy (not remapped): postgresql (PostgreSQL)"},{"severity":"ERROR","isFatal":true,"code":"ERR_BUNDLE_ACTIVATE_MISSING_CONNECTION","title":"Missing connection","details":"Connection missing for dataset transactions_unknown_scored (not remapped): postgresql (PostgreSQL)","message":"Missing connection: Connection missing for dataset transactions_unknown_scored (not remapped): postgresql (PostgreSQL)"},{"severity":"ERROR","isFatal":true,"code":"ERR_BUNDLE_ACTIVATE_MISSING_CONNECTION","title":"Missing connection","details":"Connection missing for dataset transactions_copy (not remapped): postgresql (PostgreSQL)","message":"Missing connection: Connection missing for dataset transactions_copy (not remapped): postgresql (PostgreSQL)"},{"severity":"ERROR","isFatal":true,"code":"ERR_BUNDLE_ACTIVATE_MISSING_CONNECTION","title":"Missing connection","details":"Connection missing for dataset cardholder_info_copy (not remapped): postgresql (PostgreSQL)","message":"Missing connection: Connection missing for dataset cardholder_info_copy (not remapped): postgresql (PostgreSQL)"},{"severity":"ERROR","isFatal":true,"code":"ERR_BUNDLE_ACTIVATE_MISSING_CONNECTION","title":"Missing connection","details":"Connection missing for dataset income_per_tract_usa_copy (not remapped): postgresql (PostgreSQL)","message":"Missing connection: Connection missing for dataset income_per_tract_usa_copy (not remapped): postgresql (PostgreSQL)"},{"severity":"ERROR","isFatal":true,"code":"ERR_BUNDLE_ACTIVATE_MISSING_CONNECTION","title":"Missing connection","details":"Connection missing for dataset merchants_by_state (not remapped): postgresql (PostgreSQL)","message":"Missing connection: Connection missing for dataset merchants_by_state (not remapped): postgresql (PostgreSQL)"},{"severity":"ERROR","isFatal":true,"code":"ERR_BUNDLE_ACTIVATE_MISSING_CONNECTION","title":"Missing connection","details":"Connection missing for dataset transactions_unknown (not remapped): postgresql (PostgreSQL)","message":"Missing connection: Connection missing for dataset transactions_unknown (not remapped): postgresql (PostgreSQL)"},{"severity":"ERROR","isFatal":true,"code":"ERR_BUNDLE_ACTIVATE_MISSING_CONNECTION","title":"Missing connection","details":"Connection missing for dataset transactions_known (not remapped): postgresql (PostgreSQL)","message":"Missing connection: Connection missing for dataset transactions_known (not remapped): postgresql (PostgreSQL)"}],"maxSeverity":"ERROR","anyMessage":true,"success":false,"warning":false,"error":true,"fatal":true}