大佬们，请问这些报错怎么解决？

The reference node 579 instance plan-1 on the *coupling option is not defined.

The reference node 579 instance plan-1 on the *coupling option is not defined.

The reference node 579 instance plan-1 on the *coupling option is not defined.

The reference node 579 instance plan-1 on the *coupling option is not defined.

The reference node 579 instance plan-1 on the *coupling option is not defined.

The reference node 579 instance plan-1 on the *coupling option is not defined.

A boundary condition has been specified on node set assembly__pickedset506 but this node set is not active in the model

Node set assembly__pickedset505 has not been defined

A concentrated load has been specified on node set assembly__pickedset505. This node set is not active in the model

Node set assembly__pickedset506 has not been defined

Analysis Input File Processor exited with an error - Please see the  Job-2.dat file for possible error messages if the file exists.