phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a778ef71107f8345de7e70d01c6fb589' 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 ('a778ef71107f8345de7e70d01c6fb589', -1, 1752128659, 1752128659, 'd849d861', 12, 0, 0)

Line : 187
File : sessions.php