1. The existing slave table score foreign key player_id is associated with the main table playerinfo primary key id.
2. When adding data to the slave table, an error occurred:
Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (racesys.score, CONSTRAINTscore_player_id_foreignFOREIGN KEY (player_id) REFERENCESplayerinfo(id)) (SQL: insert intoscore(id,player_id,node,childnode,time) values (041be572-2ed5-3e01- ac2c-43bab35117e9, 00ec1635-0fd5-3481-a3d4-0afa4e8f66ea, 1, 1, 2007-05-23 14:38:26))"

3.
playerinfo primary key id attribute

]

score foreign key player_id attribute

Question: What is the reason for the foreign key constraint failure? How to solve?