An error occured in a database query!

Context:
File/tiki-galleries.php
Url/tiki-galleries.php?offset=0&sort_mode=images_desc
Query:
select * from `tiki_galleries` order by `images` desc
Values:
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    string(59) "/var/www/virtual/www.scot-rail.co.uk/html/lib/tikidblib.php"
    ["line"]=>
    int(84)
    ["function"]=>
    string(9) "sql_error"
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        ["_transOK"]=>
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        ["_connectionID"]=>
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        string(41) "Unknown column 'images' in 'order clause'"
        ["_errorCode"]=>
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      ["buffer"]=>
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    }
    ["type"]=>
    string(2) "->"
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    array(3) {
      [0]=>
      &string(54) "select * from `tiki_galleries`  order by `images` desc"
      [1]=>
      &array(0) {
      }
      [2]=>
      &bool(false)
    }
  }
  [1]=>
  array(7) {
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    string(57) "/var/www/virtual/www.scot-rail.co.uk/html/lib/tikilib.php"
    ["line"]=>
    int(3007)
    ["function"]=>
    string(5) "query"
    ["class"]=>
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  [2]=>
  array(7) {
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