phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1715ca3bfb70d5a01287746a8e4939bf' 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 ('1715ca3bfb70d5a01287746a8e4939bf', -1, 1755355919, 1755355919, 'd849d8bc', -4, 0, 0)

Line : 215
File : sessions.php