@Ivo_Ivanov wrote:
I have installed Piwik version 3.0.1 in a Windows box, running it within Apache 2.4.25 x64 and PHP 7.1.1 VC14 x64 TS.
When downloding a PDF report that contains graphs (i.e. there is some data to report) the browser shows only the following error:
Piwik encoutered an error: Cannot use string offset as an array (which lead to: Cannot use string offset as an array)I debuged Piwik with xDebug and in the end the error comes from pData.php file (within pChart library) at line 80 that reads
$this->Data["Axis"][0]["Display"] = AXIS_FORMAT_DEFAULT;
I am guessing the problem is because Data is initialised as "" a few lines above this one. Seems like in PHP 7 that is not allowed anymore. Or probably first $this->Data["Axis"] must be initialized as an array. I am not a PHP guru, I am only guessing here. I will appriciate if someone can point out the fix for this.Note that if no graph is to be generated then the report is created correctly.
Thanks in advance!
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