update application/common/library/SelectPage.php.

$selectpageFields如果是字符串 并且有空格的时候 无法匹配
protected $selectpageFields = 'id, username,nickname';

Signed-off-by: 御宅男(YznCMS官方) <530765310@qq.com>

application/common/library/SelectPage.php

@@ -440,7 +440,7 @@ class SelectPage
             return $this->selectpageFields;
         }
         if ($this->selectpageFields && $this->selectpageFields !== '*') {
-            return explode(',', $this->selectpageFields);
+            return array_map('trim', explode(',', $this->selectpageFields));
         }
         return [];
     }