phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '0f71e9b134ca62490d79fc7cc49b74df' 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 ('0f71e9b134ca62490d79fc7cc49b74df', -1, 1771554979, 1771554979, 'd849d828', -201, 0, 0)

Line : 187
File : sessions.php