can't handle the import proto

[Kobe]

if the proto imports another proto file:

syntax = "proto2";
package promotion.seller_marketing.main.add_on_deal;
import "sp_idl.proto";

will raise the error "open sp_idl.proto: no such file or directory"
How would I avoid this error? I can't find the answer in the doc.

[Kobe]

not issue