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 ('1b33c419addbe6a97c2e2970de34656a', -1, 1603855220, 1603855220, '12d73e29', 210, 0, 0)

Line : 172
File : sessions.php