phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7878f999492bae7077a7d2ebe5fa8621' 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 ('7878f999492bae7077a7d2ebe5fa8621', -1, 1743845954, 1743845954, '12dc299b', 3, 0, 0)

Line : 187
File : sessions.php