phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3bc779ab492ef661a9cb7dd6b7bb23e7' 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 ('3bc779ab492ef661a9cb7dd6b7bb23e7', -1, 1550795918, 1550795918, '22e473d8', 2, 0, 0)

Line : 198
File : sessions.php