phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '866458520a6de186546d05113fdefe0a' 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 ('866458520a6de186546d05113fdefe0a', -1, 1558378896, 1558378896, '36eae3ca', -9, 0, 0)

Line : 198
File : sessions.php