phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '402d10fff8a50b2122592e5d66cedfce' 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 ('402d10fff8a50b2122592e5d66cedfce', -1, 1767184077, 1767184077, 'd849d855', 28, 0, 0)

Line : 187
File : sessions.php