phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ad17b99e273cb0f417db9cdab0f7fddb' 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 ('ad17b99e273cb0f417db9cdab0f7fddb', -1, 1765059544, 1765059544, 'd849d8a3', -9, 0, 0)

Line : 187
File : sessions.php