phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4eaf6956ab7834930dc10e0a57b13789' 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 ('4eaf6956ab7834930dc10e0a57b13789', -1, 1771150051, 1771150051, 'd849d874', -9, 0, 0)

Line : 187
File : sessions.php