Could not find any implementation for node {ForeignNode[3001...Add_1839]}

[zzqiuzz]

Currently i'm using trt8.6.1.5 to convert my ONNX model into trt engine on Orin.
However, i encountered this problem: Could not find any implementation for node {ForeignNode[3001...Add_1839]} .
I've found that inserting a custom plugin like CustomIdentity before Add_1839 may interrupt the Myelin optimization process. And the erorr seemlingly disappeared, however, it turned into another one:Could not find any implementation for node {ForeignNode[3001...Add_1825]} . I don't know what's the real magic behind this.
How can i previously know whether operators definition or whatever in my ONNX model that can be problematic in the trt engine converting process? Or is there any tools to help me identify it?