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Severity: Notice
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Filename: controllers/presentation.php
Line Number: 875
Severity: Notice
Message: Trying to get property of non-object
Filename: controllers/presentation.php
Line Number: 875
Author(s):
1. Stane Pejovnik, University of Ljubljana, Faculty of Social Sciences, Slovenia
2. Genorio Boštjan, Faculty of Chemistry and Chemical Technology , Slovenia