phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a13b8205c43479d52e3d7c9e27d09aa9' 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 ('a13b8205c43479d52e3d7c9e27d09aa9', -1, 1766084005, 1766084005, 'd849d8d7', -4, 0, 0)

Line : 187
File : sessions.php