phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3c8f53831c26b97e8019d0aadb00d8ab' 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 ('3c8f53831c26b97e8019d0aadb00d8ab', -1, 1763300839, 1763300839, 'd849d879', -4, 0, 0)

Line : 187
File : sessions.php