It can be done locally, but not after ubuntu?

mysqli_fetch_array() expects parameter 1 to be mysqli_result, boolean

it is OK on the local side, but such an error occurs after ubuntu
my local side and ubuntu both install php7
. The difference is that it is possible that I am 7.2.2 ubuntu is 7, but does it matter?

Mar.05,2021

does the php of ubuntu perform php-fpm snooping? You can try to visit html first. If html doesn't work, you should consider the nginx/apache problem. You can see whether error_log, and hosts have added domain names. Finally, you find that if html can php, you can't see if php-fpm is running. Search

with grep.
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