phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '87dc4c9eea663a87280dcf72b7490dd9' 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 ('87dc4c9eea663a87280dcf72b7490dd9', -1, 1769814267, 1769814267, 'd849d86e', 1, 0, 0)

Line : 187
File : sessions.php