Title: PHP Warning
Last modified: February 16, 2021

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# PHP Warning

 *  Resolved [glocs](https://wordpress.org/support/users/glocs/)
 * (@glocs)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/php-warning-281/)
 * Hi,
 * on wp-admin/error_log:
 * `PHP Warning: A non-numeric value encountered in .../wp-content/plugins/wp-express-
   checkout/includes/class-wpec-process-ipn.php on line 157`
 * PHP: 7.4.11
    WP: 5.6.1
 * Thx

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Contributor [mbrsolution](https://wordpress.org/support/users/mbrsolution/)
 * (@mbrsolution)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/php-warning-281/#post-14060253)
 * Hi, do you have a cache plugin running in your site?
 * Regards
 *  Plugin Author [mra13](https://wordpress.org/support/users/mra13/)
 * (@mra13)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/php-warning-281/#post-14061081)
 * Is this happening all the time or there was one product with an incorrect price
   information which caused the issue?
 *  Thread Starter [glocs](https://wordpress.org/support/users/glocs/)
 * (@glocs)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/php-warning-281/#post-14062405)
 * Hi,
 * no cache plugin.
 * It’s not drop an error all the time, the last error was at [16-Feb-2021 12:57:
   51 UTC]
    I made a test now, with no errors.
 * A have 1 product with this params:
    price: 100 Shipping Cost: empty Tax (%): 
   empty
 *  Plugin Contributor [mbrsolution](https://wordpress.org/support/users/mbrsolution/)
 * (@mbrsolution)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/php-warning-281/#post-14072829)
 * Hi,
 * What browsers have you tested so far? Also can you make sure you clear the browser
   cache, then try again. Do you know if your server is using a cache system?
 * Thank you

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘PHP Warning’ is closed to new replies.

 * ![](https://ps.w.org/wp-express-checkout/assets/icon-128x128.png?rev=2219181)
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## Tags

 * [PHP Warning](https://wordpress.org/support/topic-tag/php-warning/)

 * 4 replies
 * 3 participants
 * Last reply from: [mbrsolution](https://wordpress.org/support/users/mbrsolution/)
 * Last activity: [5 years, 1 month ago](https://wordpress.org/support/topic/php-warning-281/#post-14072829)
 * Status: resolved