phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('cfc79f8b654e760c40d9f59e16e9c773', -1, 1709336899, 1709336899, '22cca9e6', -4, 0, 0)

Line : 187
File : sessions.php