phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2a77a865d2d5c3429c851b875f2bb640' 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 ('2a77a865d2d5c3429c851b875f2bb640', -1, 1777939253, 1777939253, 'd849d89f', 2, 0, 0)

Line : 187
File : sessions.php