$oMerger->save() and out() Error.

[DuckHunter213]

ErrorException (E_DEPRECATED)
The each() function is deprecated. This message will be suppressed on further calls

the proyect don't allow save pdfs

[amaurysoares]

Same problem here...

[Allessia444]

please update below code on this file vendor/setasign/fpdi/fpdi.php

while (list($k, $v) = each($value[1])) {
$this->_straightOut($k . ' ');
$this->_writeValue($v);
}
update:
foreach ($value[1] as $key => $value) {
$this->_straightOut($key . ' ');
$this->_writeValue($value);
}

[renky]

the better solution would be, to update the requirement: "setasign/fpdi-fpdf" - setasign already fixed the issue, if you update to next major releases - not 1.6 any more (thats already marked as legacy).