An error when build the proejct

Hello, I’m a new senery developer. When I click build all to build the project, the console showed me an error. Just like this:

Actrually this is my first project, and I have not build it successfully before. So what caused it? and how can I deal with it. Thanks!

Some Vectorplacement object that you have in your scene is not valid,
Need to remake it
Also the airport name is showing “???”, Need to give a valid name in the

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Thanks a lot, I will try to solve it.
And the ??? may be caused by its Chinese character.