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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. Borko Matijević, Serbia
2. Suzana Apostolov, Univerzitet u Novom Sadu, Prirodno-matematički fakultet, Serbia
3. Đenđi Vaštag, Serbia