phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b6dd6e23d1cfc9857072f6a37be745d1' 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 ('b6dd6e23d1cfc9857072f6a37be745d1', -1, 1768165004, 1768165004, '0aff0001', 34, 0, 0)

Line : 199
File : sessions.php