error msg ...mysqli.php on line 305

[Pulsar]

Hello,

I received this error message:
Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in /home/gulgun/public_html/iremtravel.com/libraries/joomla/database/database/mysqli.php on line 305

Warning: Invalid argument supplied for foreach() in /home/gulgun/public_html/iremtravel.com/administrator/components/com_phocagallery/libraries/phocagallery/render/renderadmin.php on line 70

Joomla 1.7.2
Phoca Gallery 3.1.1 version

Could you help me please?
Thanks

[Jan]

Hi, see:
https://www.phoca.cz/documents/16-joomla ... ent-errors

Jan