phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a869f02e70099327bfc517978cc5c9eb' 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 ('a869f02e70099327bfc517978cc5c9eb', -1, 1722050126, 1722050126, 'ac1d0011', -4, 0, 0)

Line : 187
File : sessions.php