phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '255e7876a2ea006ffe0294a79656e4fe' 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 ('255e7876a2ea006ffe0294a79656e4fe', -1, 1786975950, 1786975950, 'd849d91f', 3, 0, 0)

Line : 187
File : sessions.php