phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f0dd8a103e5a46d597d2763a7439bfbd' 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 ('f0dd8a103e5a46d597d2763a7439bfbd', -1, 1776600598, 1776600598, 'd849d8ef', -9, 0, 0)

Line : 187
File : sessions.php