Answers.Body: <p>Solution</p>
  
  <p>Login to the server and access mysql and find your database.</p>
  
  <ol>
  <li><p>Select the fields table to locate the ID of the problem field.</p>
  
  <p>SELECT * FROM fields;</p></li>
  <li><p>Remove the field using the ID.</p>
  
  <p>DELETE from fields where id = '355';</p></li>
  </ol>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-11-06T15:58:50.940Z
Answers.LastActivityDate: 2019-11-06T15:58:50.940Z
Answers.UserDisplayName: Dan Lee
Body: <p>I was adding new fields to my Craft 3 install using the field manager plugin. Suddenly I am seeing a Internal Server Error when trying to access the admin area.</p>
  
  <p>The front end looks fine. Anyone know how I can quickly resolve?</p>
  
  <p><strong>In web.log I get</strong></p>
  
  <pre><code>Setting unknown property: craft\behaviors\ContentBehavior::announcementLink in /home/forge/www.uk-cpi.com/vendor/yiisoft/yii2/base/BaseObject.php:163
  </code></pre>
  
  <p><strong>In phperrors.log I get</strong></p>
  
  <pre><code>An Error occurred while handling another error:
  yii\base\UnknownPropertyException: Setting unknown property: craft\behaviors\ContentBehavior::announcementLink in /home/forge/www.uk-cpi.com/vendor/yiisoft/yii2/base/BaseObject.php:163
  </code></pre>
  
  <p><code>announcementLink</code> is the name of the field I was adding</p>
  
Tags: <craft3><field><error-message>
Title: Internal Server Error when adding new Fields
ThreadText: # Internal Server Error when adding new Fields
  
  (Asked by: username_0 on 2019-11-06)
  
  I was adding new fields to my Craft 3 install using the field manager plugin. Suddenly I am seeing a Internal Server Error when trying to access the admin area.
  
  The front end looks fine. Anyone know how I can quickly resolve?
  
  **In web.log I get**
  
  ```
  Setting unknown property: craft\behaviors\ContentBehavior::announcementLink in /home/forge/www.uk-cpi.com/vendor/yiisoft/yii2/base/BaseObject.php:163
  
  ```
  
  **In phperrors.log I get**
  
  ```
  An Error occurred while handling another error:
  yii\base\UnknownPropertyException: Setting unknown property: craft\behaviors\ContentBehavior::announcementLink in /home/forge/www.uk-cpi.com/vendor/yiisoft/yii2/base/BaseObject.php:163
  
  ```
  
  `announcementLink` is the name of the field I was adding
  
  **Tags:** craft3, field, error-message
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_0 on 2019-11-06. Score: 1
  
  Solution
  
  Login to the server and access mysql and find your database.
  
  1. Select the fields table to locate the ID of the problem field.
  
     SELECT \* FROM fields;
  2. Remove the field using the ID.
  
     DELETE from fields where id = '355';
  
  
  ---
  
  