phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ad790d891812d81d399195616477a802' 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 ('ad790d891812d81d399195616477a802', -1, 1769249546, 1769249546, 'd849d814', -4, 0, 0)

Line : 187
File : sessions.php