phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '772311ee557426f3bbe01bc997c21969' 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 ('772311ee557426f3bbe01bc997c21969', -1, 1771136620, 1771136620, 'd849d8a7', 14, 0, 0)

Line : 187
File : sessions.php