phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ac9d1fcc4f6379125bcaf6900fdf83a6' 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 ('ac9d1fcc4f6379125bcaf6900fdf83a6', -1, 1714338759, 1714338759, '0390fda1', 15, 0, 0)

Line : 187
File : sessions.php