phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3864dbc56fcaa60fac1fdd5ea0d1c55c' 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 ('3864dbc56fcaa60fac1fdd5ea0d1c55c', -1, 1756871645, 1756871645, 'd849d865', 14, 0, 0)

Line : 187
File : sessions.php