[Typo3] help! Mysql error when showing "list view"

[Jane Larsen]

This is what happens when I try to display my list view but what's going on? 
(it's placed above the normal content om that view)*

Warning*: mysql_fetch_row(): supplied argument is not a valid MySQL result 
resource in */home/jnlwebdk/public_html/typo3_src-3.7.0
/t3lib/class.t3lib_db.php* on line *736*

*Warning*: Cannot modify header information - headers already sent by 
(output started at
/home/jnlwebdk/public_html/typo3_src-3.7.0/t3lib/class.t3lib_db.php:736)
in */home/jnlwebdk/public_html/typo3_src-3.7.0/typo3/template.php* on line *
601

*Can it be some server setup issue, some extension missing og something 
else?

Thank you for any good leads
mvh Jane