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... in the backend:

Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in /var/www/web/html/joomla/libraries/joomla/database/database/mysqli.php on line 305


and images:
Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in /var/www/web/html/joomla/libraries/joomla/database/database/mysqli.php on line 305


I have installed a new testserver with 1.7.0 an only PG 3.0.2 on it for testing. This is the report from the debug modus:
500 - Es ist ein Fehler aufgetreten

JDatabaseMySQL::query: 1146 - Table 'usr_web_13.kj02l_phocagallery_categories' doesn't exist ...

Hi, seems like the tables were not successfully installed in your database:

- search this forum to solve it (there are similar questions solved)
- see: https://www.phoca.cz/documents/2-phoca-g ... em-solving

Jan