It would be great if you changed the language of your PAD to English to make it easier to help you, or at least if you translated the error message.
If you're willing to change the language, see this video on how to do it: https://youtu.be/l2zpRkUBk0o
As to the likely cause of your error (based on context) is that your selectors probably include some values that are related to the current browser session. It is common for web pages to insert a session Id into the Ids of some UI elements. PAD usually captures those properties and uses them in the selector, as they seem unique. But then the flow fails on a new browser session.
I suggest checking the selectors and disabling the properties that seem like they include some random numbers/letters in their values. Usually in the Id property.
If you are not sure which exact property could be causing that, please share a screenshot of the selector and I might offer some ideas.
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