phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5d877ef34dcb721620d58855ac24d257' 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 ('5d877ef34dcb721620d58855ac24d257', -1, 1788643477, 1788643477, 'd849d86d', 6, 0, 0)

Line : 187
File : sessions.php