phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1cfb63edff166cf978e1a5df8281bcbf' 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 ('1cfb63edff166cf978e1a5df8281bcbf', -1, 1569057858, 1569057858, '12cc0235', 14, 0, 0)

Line : 187
File : sessions.php