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 ('3bf0531c91a829a52b627a7eba4a7443', -1, 1713528031, 1713528031, '12bc3ddf', -8, 0, 0)

Line : 187
File : sessions.php