phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '760e774e40a30eedc7489a4f1dd681c4' 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 ('760e774e40a30eedc7489a4f1dd681c4', -1, 1766126768, 1766126768, 'd849d8d7', -4, 0, 0)

Line : 187
File : sessions.php