phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a7d88d63d98c3010ef80aea35ab52308' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('a7d88d63d98c3010ef80aea35ab52308', -1, 1771296555, 1771296555, 'd849d87b', -9, 0)

Line : 180
File : /www/includes/sessions.php