Thank you very much for your response.
Your suggestion that there is no direct compatibility between PAD versions 2.13 and 2.14 has helped me to understand the cause of the error.
The PAD itself is backward compatible, so flows created before version 2.13 can be executed in version 2.14. However, I have copied and pasted the code created in version 2.13 into a text file, and of course that text file has not been updated to be suitable for version 2.14. Is this understanding correct?
I solved the problem by copying and pasting the code of the flow opened in version 2.14 PAD to the text file again.
I'm not good at English, so I apologize if this is rude.
Thank you very much for your help!
