Error: Content-Security-Policy HTTP header: Bad content security policy: Expecting ancestor-source but found "'self".

Hello
I moved my host server no another new server, and Now  I a have a new
error on Validation Service, I can't find about this error at search
of the internet

What changes should be made to the server and what should be done to
fix the problem?

text of Error:

 Content-Security-Policy HTTP header: Bad content security policy:
Expecting ancestor-source but found "'self".

https://validator.w3.org/nu/?doc=http%3A%2F%2Ftype74.ir%2F

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Transcription of voice
http://type74.ir

Received on Thursday, 1 November 2018 08:35:18 UTC