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Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' , rec_time, rec_date from weather where timestamp >=  and timestamp <=' at line 1 in /home/.sites/327/site3343342/web/wetter/polar.php:41
Stack trace:
#0 /home/.sites/327/site3343342/web/wetter/polar.php(41): mysqli_query(Object(mysqli), 'select , , rec_...')
#1 {main}
  thrown in /home/.sites/327/site3343342/web/wetter/polar.php on line 41