phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ac755f8d5aedf34a8360bf3b66dc8dfd' 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 ('ac755f8d5aedf34a8360bf3b66dc8dfd', -1, 1765944260, 1765944260, 'd849d869', -4, 0, 0)

Line : 187
File : sessions.php