phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a640ca1f4131ecdd7448b03c32bd7778' 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 ('a640ca1f4131ecdd7448b03c32bd7778', -1, 1714781953, 1714781953, 'c0a80201', -9, 0, 0)

Line : 187
File : sessions.php