phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7b87a0f3e93c2c86338e895f190f6173' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('7b87a0f3e93c2c86338e895f190f6173', -1, 1772805014, 1772805014, 'd849d88c', -9, 0)

Line : 180
File : /www/includes/sessions.php