phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9ee578527e0cd9482bc69fe968e37ace' 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 ('9ee578527e0cd9482bc69fe968e37ace', -1, 1519482075, 1519482075, '365cc552', 6, 0, 0)

Line : 187
File : sessions.php