phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '02c9bbf9c633ba3dc3a182a7851c5c52' 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 ('02c9bbf9c633ba3dc3a182a7851c5c52', -1, 1765036563, 1765036563, 'd849d8bc', -4, 0, 0)

Line : 187
File : sessions.php