phpBB : Erreur Critique

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a6753fcd5219bd42811866b1aa90ddaf' 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 ('a6753fcd5219bd42811866b1aa90ddaf', -1, 1768520924, 1768520924, 'd849d87f', -4, 0, 0)

Line : 187
File : sessions.php