phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO docttorrdiscluc_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('8761653a7b19f7a1712f947ae3542c03', -1, 1574405706, 1574405706, '12cc3868', -11, 0, 0)

Line : 190
File : sessions.php