Class 'Concrete\Core\Database\Platforms\MySQL80Platform' not found

I am trying to install concrete 5 on localhost.
on the site information I get the error Class 'Concrete\Core\Database\Platforms\MySQL80Platform' not found.

I attach a screen shot of the error

Any help would be apprciated

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alanek replied on at Permalink Reply
I have solved my problem.

I did not read the installation instructions well. I unzipped the downloaded file in my download directory and then uploaded it to localhost.

I just started again, this time I uploaded the zip file to localhost and then unzipped the file, now it works.

It would be interesting to know why this happens, if anyone can explain.