package export ist broken in php8

[fwoldt]

Create a new package for example content object export

and do all steps until export to file

=> this is broken

• vendor/zetacomponents/archive/src/file/block_file.php
  sizeof(): Argument #1 ($value) must be of type Countable|array, string given in vendor/zetacomponents/archive/src/file/block_file.php on line 366
  @see zetacomponents/Archive@9e1fa02

=> zetacomponents version master has the bugfix already but the current stable version 1.5 not

=> so we have to patch => or switch to master of zetacomponents in ezpbublish_legacy composer.json
https://github.com/ezsystems/ezpublish-legacy/blob/2019.03/composer.json

[emodric]

zetacomponents/archive is tagged with 1.5.1 thanks to @derickr so this is fixed now.

[fwoldt]

yes the export is working now :-)