phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'dfb4db030fe08da5366a1d78e581a75d' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('dfb4db030fe08da5366a1d78e581a75d', -1, 1766042845, 1766042845, 'd849d817', -4, 0, 0)

Line : 187
File : sessions.php