phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b986a0c8d102057f8f74b62192c3dc7d' 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 ('b986a0c8d102057f8f74b62192c3dc7d', -1, 1771217653, 1771217653, '00000000', 30, 0, 0)

Line : 187
File : sessions.php