Hello,
We have done some tests with your DOCX and we don't get any error. We have tested it with PHP 5.2 to PHP 7.1 on Linux, Windows and macOS with phpdocx 7.5 (the version you are using).
This is the script we have run using your templates:
<?php
require_once 'classes/MultiMerge.inc';
$docx = new CreateDocxFromTemplate('FBTemplate_Cat.docx');
$chart = new WordFragment($docx, "document");
$data = array(
'legend' => array('Legend 1', 'Legend 2', 'Legend 3'),
'data' => array(
array(
'name' => 'data 1',
'values' => array(10, 20, 5),
),
array(
'name' => 'data 2',
'values' => array(20, 60, 3),
),
array(
'name' => 'data 3',
'values' => array(50, 33, 7),
),
),
);
$paramsChart = array(
'data' => $data,
'type' => 'barChart',
'color' => 5,
'sizeX' => 15,
'sizeY' => 10,
'chartAlign' => 'center',
'legendPos' => 'none',
'legendOverlay' => '0',
'border' => '1',
'hgrid' => '1',
'vgrid' => '0',
'showTable' => '1'
);
$chart->addChart($paramsChart);
$docx->replaceVariableByWordFragment(array('Ranking_1' => $chart), array('type' => 'inline'));
$docx->createDocx('output_3');
$merge = new MultiMerge();
$merge->mergeDocx('output_3.docx', array('Test_Front_Page.docx'), 'output_2.docx', array());
Please compare it with the one you are running. This script replaces the placeholder with a chart, then generates a DOCX and finally merges the documents; it doesn't return any error. Please check if your script read access to the DOCX and that both files exist before merging them.
Regards,