phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1d9a9ce0617a9aa74fd4d9ce7d77a80e' 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 ('1d9a9ce0617a9aa74fd4d9ce7d77a80e', -1, 1558320984, 1558320984, '12ea58c4', -4, 0, 0)

Line : 174
File : sessions.php