Export planning - Division by zero - by: dieperie

Dears,
During planning export, the following error occurs:

2019-05-31 10:34:30.642 ***** ERROR ***** [V8.0.3] ERROR *****
2019-05-31 10:34:30.643 ***** ERROR ***** [V8.0.3] on file '/usr/share/projeqtor/tool/jsonPlanning.php' at line (1580)
2019-05-31 10:34:30.643 ***** ERROR ***** [V8.0.3] cause = Division by zero

The last lines from the .xml file.
<UID>120</UID>
<TaskUID>120</TaskUID>
<ResourceUID>23</ResourceUID>
<div class="messageERROR" >ERROR : An error occurred on 2019-05-31 at 10:34:30</div><input type="hidden" id="lastSaveId" value="" /><input type="hidden" id="lastOperation" value="ERROR" /><input type="hidden" id="lastOperationStatus" value="ERROR" />

'/usr/share/projeqtor/tool/jsonPlanning.php' at line (1580)
$pct=($ass->plannedWork)?round($ass->realWork/$ass->plannedWork*100,0):0;

Thank you.