phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21a0779e3276d7b4dee359a7a3678956' 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 ('21a0779e3276d7b4dee359a7a3678956', -1, 1715164820, 1715164820, 'c0a80201', -4, 0, 0)

Line : 187
File : sessions.php