phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '28e1d918aef8b8393515895e8abc4dbb' 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 ('28e1d918aef8b8393515895e8abc4dbb', -1, 1768655139, 1768655139, 'd849d87e', -9, 0, 0)

Line : 215
File : sessions.php