phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a8d4f45bd1168801a7a4ff6e8895e196' 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 ('a8d4f45bd1168801a7a4ff6e8895e196', -1, 1752959107, 1752959107, 'd849d8b3', -9, 0, 0)

Line : 187
File : sessions.php