phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9a0df4f97032f78181187d4ea5b76e55' 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 ('9a0df4f97032f78181187d4ea5b76e55', -1, 1767954695, 1767954695, 'd849d805', 2, 0, 0)

Line : 187
File : sessions.php