You are trying to upgrade the Oracle client from 12c to 19c and are getting the following error:
INS-32027 The Oracle_home environment variable is currently set and this value is not same as the specified path for software location. This may impact the proper configuration of software.
The Oracle_HOME path configuration in the Windows Environment variable is pointing to a different directory than the path for the 19c Oracle client install.
Update the Oracle_HOME path configuration in the Windows Environment variable to point to the correct directory for the Oracle 19c client.