phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '955e9f79e08e911cb98512fcb153e5a5' 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 ('955e9f79e08e911cb98512fcb153e5a5', -1, 1791831942, 1791831942, 'd849d8ee', 18, 0, 0)

Line : 187
File : sessions.php