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 ('c68dc81933b2afef47a9a0902b9fcdd8', -1, 1713923370, 1713923370, '038b4683', -4, 0, 0)

Line : 187
File : sessions.php