phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'efbff9b4b6823dbecfd1877f04389a2d' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('efbff9b4b6823dbecfd1877f04389a2d', -1, 1769587690, 1769587690, '00000000', -9, 0, 0)

Line : 187
File : sessions.php