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Severity: Notice
Message: Trying to get property of non-object
Filename: models/presentation_model.php
Line Number: 241
A PHP Error was encountered
Severity: Notice
Message: Trying to get property of non-object
Filename: models/presentation_model.php
Line Number: 383
A PHP Error was encountered
Severity: Notice
Message: Trying to get property of non-object
Filename: models/presentation_model.php
Line Number: 383
