phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '850f7b82b3ba8d2c66be13e4c7673250' 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 ('850f7b82b3ba8d2c66be13e4c7673250', -1, 1776413877, 1776413877, 'd849d8e9', -4, 0, 0)

Line : 187
File : sessions.php