phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '6da616da647474d4017f1bfd614845e9' 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 ('6da616da647474d4017f1bfd614845e9', -1, 1776588668, 1776588668, 'd849d8ef', -2, 0, 0)

Line : 187
File : sessions.php