phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ffca12f4f9c4c99156defdd56de47168' 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 ('ffca12f4f9c4c99156defdd56de47168', -1, 1768027021, 1768027021, 'd849d8a4', -4, 0, 0)

Line : 215
File : sessions.php