Test run indicated an error

What causes this issue?

The test run to upload an SAPUI5 application, component, or library into
the SAPUI5 ABAP repository &V1& indicated errors.

System Response

The upload won't be okay.

How to fix this error?

Check the errors and warnings in the log output.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.