PHP Errors after migration to Magento 2.2 and PHP7.1

[nobodyMO]

After the migration to Magento 2.2 and PHP 7.1 I got PHP errors in the mpdf library files.
File cssmgr.php method MergeCSS tries to set $attr['ID'] for not initialized variables.
I fixed it locally by changing
if (!isset($attr['ID'])) { $attr['ID'] = ''; }

to

if (!isset($attr['ID'])) { if (!is_array($attr)) { $attr=array("ID"=> ''); } else { $attr['ID'] = ''; } }

File mpdf.php method ConvertSize has an implicit cast from string to float, witch results to the following error message:

Warning: A non-numeric value encountered in /var/www/magento/vendor/eadesignro/mpdf/mpdf.php on line 30648

I fixed it locally by changing
`
}} else {
$size *= (25.4 / $this->dpi); //nothing == px
}

`
to

`
} elseif (is_numeric ($size)) {
$size *= (25.4 / $this->dpi); //nothing == px
} else {
$size = floatval ($size *(25.4 / $this->dpi); //nothing == px
}

`
Is it possible to upgrade EaDesgin/mpdf to the current branch of mpdf/mpdf?

[gewaechshaus]

Same here!

[eadesignro]

@gewaechshaus Hi, we are testing this week on our commercial versions so this will be fixed.

[gewaechshaus]

I would also recommend to implement the current mpdf release direclty through mpdf/mpdf...

[eadesignro]

@gewaechshaus hmmm whet release are you referring to? did you test another version? It will be best like that.

[gewaechshaus]

@eadesignro - Any news on this?

[eadesignro]

@gewaechshaus If time allows it maybe till Monday. Patience.

[gewaechshaus]

@eadesignro - thanks for updating us!

[eadesignro]

@gewaechshaus This should be ready. Let me know if you find any issue.