phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'bb811df1df0071b9f21e307858cf42f6' 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 ('bb811df1df0071b9f21e307858cf42f6', -1, 1770156031, 1770156031, 'd849d8a2', -4, 0, 0)

Line : 187
File : sessions.php