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 ('c05163a9d6938569c035832446745f14', -1, 1711691324, 1711691324, '03d15133', -7, 0, 0)

Line : 187
File : sessions.php