phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'fcec99e02ed1828f2c993e2658d86749' 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 ('fcec99e02ed1828f2c993e2658d86749', -1, 1510959432, 1510959432, '36a2a456', 22, 0, 0)

Line : 187
File : sessions.php