Howard Miller

You're not running Moodle 4.2.2. You've upgraded PHP, but not Moodle. Here's (a link) to the error line in 4.2.2

https://github.com/moodle/moodle/blob/91e6642f16492fd8a6443e1581e1b14592f74e44/lib/dml/mysqli_native_moodle_recordset.php#L82

...it's just an empty line. Couldn't have caused the error

Here's the same line in 4.0.5

https://github.com/moodle/moodle/blob/fdbcfa1b153ee8b3cf863044f7b28f8b3b7a9500/lib/dml/mysqli_native_moodle_recordset.php#L82

...function declaration which definitely could have caused the error.

I hope you mean 'chmod -R 0777'. The 0 is significant (it means Octal), and the -R means recursive. However you copied the files, then you probably need to do that *after* the copy (depending what user the rsync is running at). 

If your data copy broke then it certainly isn't a good thing but it's not what caused this issue.

I think this is a bug / improvement, so MDL-79333

To give a little flavour from my site...

Yeh - you need to explain what you think the issue is here. The user knows what username or email they typed so that's not a security issue.

This data is then sent by HTTPS which is secure. So I don't see what the issue can be.

This sounds very similar to a discussion we had with you a couple of months ago. Essentially, if you don't believe that HTTPS is secure enough for your application then you can't use web applications at all.