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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. Valentina Veselinović,
Republic of Srpska, Bosnia and Herzegovina
2. Milica Jeremić Knežević, Armenia
3. Branislava Petronijević, Armenia
4. Aleksandra Anđelković, Armenia
5. Dubravka Marković, Serbia
Applied paper from author