phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1a449931ff47eedf52d5a74f9384e460' 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 ('1a449931ff47eedf52d5a74f9384e460', -1, 1762683605, 1762683605, 'd849d817', -2, 0, 0)

Line : 187
File : sessions.php