Hi @xiaodinghuang
Which RTD version are you currently using?
If you hover the mouse pointer over the error message, do you see any more detailed description of the error?
Was the project created from scratch in S32DS 3.6.1, imported from an RTD example, or migrated from a different S32DS version?
Have there been any recent changes to the project or your S32DS installation before this issue started occurring?
BR, VaneB