Title: Fatal error: Can’t use function return value
Last modified: July 28, 2017

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# Fatal error: Can’t use function return value

 *  Resolved [Milla](https://wordpress.org/support/users/mekaselska/)
 * (@mekaselska)
 * [8 years, 10 months ago](https://wordpress.org/support/topic/fatal-error-cant-use-function-return-value-4/)
 * After installing the plugin I tried to activate it, but I got an error message
 * Fatal error: Can’t use function return value in write context in /home/#####/
   public_html/wp-content/plugins/conversation-watson/includes/settings.php on line
   46
 * This line seems to be
    if (empty(get_option(‘watsonconv_credentials’))) {
 * Apparently something prevents the plugin to ask the credentials? How can I proceed?

Viewing 1 replies (of 1 total)

 *  Plugin Contributor [cognitiveclass](https://wordpress.org/support/users/cognitiveclass/)
 * (@cognitiveclass)
 * [8 years, 10 months ago](https://wordpress.org/support/topic/fatal-error-cant-use-function-return-value-4/#post-9371285)
 * Hi Milla,
 * Sorry for the delay. It appears you are using an old version of PHP which is 
   not currently supported by this plugin; this will be addressed in an update soon.
   To fix this issue sooner, you can update your PHP version to 5.6 or greater.
 * Regards,
    Cognitive Class

Viewing 1 replies (of 1 total)

The topic ‘Fatal error: Can’t use function return value’ is closed to new replies.

 * ![](https://ps.w.org/conversation-watson/assets/icon-256x256.png?rev=1684465)
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## Tags

 * [credentials](https://wordpress.org/support/topic-tag/credentials/)
 * [Watson](https://wordpress.org/support/topic-tag/watson/)

 * 1 reply
 * 2 participants
 * Last reply from: [cognitiveclass](https://wordpress.org/support/users/cognitiveclass/)
 * Last activity: [8 years, 10 months ago](https://wordpress.org/support/topic/fatal-error-cant-use-function-return-value-4/#post-9371285)
 * Status: resolved