그누보드를 설치 했는데요 로그인이 튕기네요

Warning: Unknown: open(./data/session/sess_9b714077687059e4bde5b638e6392a07, O_RDWR) failed: No such file or directory (2) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (./data/session) in Unknown on line 0
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