[Typo3] mysql fetch error?

[Christine Molina]

I don't know why but suddenly I get the following error:

Warning: mysql_fetch_row(): supplied argument is not a valid MySQL result 
resource in /var/www/realdata/cms/typo3/t3lib/class.t3lib_db.php on line 754

Warning: mysql_fetch_row(): supplied argument is not a valid MySQL result 
resource in /var/www/realdata/cms/typo3/t3lib/class.t3lib_db.php on line 754

Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result 
resource in /var/www/realdata/cms/typo3/t3lib/class.t3lib_db.php on line 741

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result 
resource in /var/www/realdata/cms/typo3/t3lib/class.t3lib_db.php on line 729

Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result 
resource in /var/www/realdata/cms/typo3/t3lib/class.t3lib_db.php on line 741


I was just working in the backend and everything seemed okay to me. But no I 
can't see my content anymore? How can I fix this?


I hope someone can help me quickly.