phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4ad0a4aba84a932e6b982783617cd13f' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('4ad0a4aba84a932e6b982783617cd13f', -1, 1769241728, 1769241728, 'd849d814', -4, 0, 0)

Line : 187
File : sessions.php