phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4ec5f259136c7473553317048b8227ea' 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 ('4ec5f259136c7473553317048b8227ea', -1, 1768888427, 1768888427, 'd849d879', -9, 0, 0)

Line : 187
File : sessions.php