phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c426f890f6bf0aba0b1972b4f10d3d47' 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 ('c426f890f6bf0aba0b1972b4f10d3d47', -1, 1771394662, 1771394662, 'd849d876', 1, 0, 0)

Line : 187
File : sessions.php