phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8907520a5b2868778383d0a90ab9ac28' 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 ('8907520a5b2868778383d0a90ab9ac28', -1, 1762261008, 1762261008, 'd849d879', 11, 0, 0)

Line : 187
File : sessions.php