WeChat public test account configuration failed

I develop using thinkphp. There is obviously no problem with the server. Why does a configuration failure pop up when I configure the WeChat test account?

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I develop using thinkphp. There is obviously no problem with the server. Why does a configuration failure pop up when I configure the WeChat test account?

No one here can read minds

Search online and you should have the answer.
Send you a link to look at WeChat development - the solution to the problem of WeChat public platform test account configuration failure.

Answer 666 on the 1st floor
Download the demo from the document of the WeChat official account, just take a look at it yourself, there is no problem with the ci I use

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