phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '18986fb4c89d974b9471a1f2093df086' 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 ('18986fb4c89d974b9471a1f2093df086', -1, 1765492993, 1765492993, 'd849d81b', -4, 0, 0)

Line : 187
File : sessions.php