---
title: E40021 Compilation_Error
description: "Failed to compile Op %s. oppath is %s and optype is %s."
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/maintenref/troubleshooting/atlaserrorcode_15_0144.html
sourcePath: /source/zh/canncommercial/900/maintenref/troubleshooting/atlaserrorcode_15_0144.html
indexId: b4794567ac73ddbcaa09bb82635f56a374cfd5d8887a7f2befbee18c6e86e56a84
---
# E40021 Compilation_Error

#### Symptom

Failed to compile Op %s. oppath is %s and optype is %s.


#### Solution

See the host log for details, and then check the Python stack where the error log is reported.