phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f9a1d3a426ebfb36e009d0c9645c6f15' 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 ('f9a1d3a426ebfb36e009d0c9645c6f15', -1, 1756110044, 1756110044, 'd849d87c', -4, 0, 0)

Line : 215
File : sessions.php