phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '90a7b1c9209a249e4fa263b82ef8aada' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('90a7b1c9209a249e4fa263b82ef8aada', -1, 1766144465, 1766144465, 'd849d857', 2, 0, 0)

Line : 187
File : sessions.php