Title: Fatal error: Cannot declare class UpStream_Model_ArgumentException
Last modified: August 21, 2022

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# Fatal error: Cannot declare class UpStream_Model_ArgumentException

 *  [Megos](https://wordpress.org/support/users/megos/)
 * (@megos)
 * [3 years, 9 months ago](https://wordpress.org/support/topic/fatal-error-cannot-declare-class-upstream_model_argumentexception/)
 * After WP update I got this error:
 * Fatal error: Cannot declare class UpStream_Model_ArgumentException, because the
   name is already in use in public_html/wp-content/plugins/upstream/includes/model/
   class-upstream-model-argumentexception.php on line 0.
 * How to fix it?

The topic ‘Fatal error: Cannot declare class UpStream_Model_ArgumentException’ is
closed to new replies.

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 * 0 replies
 * 1 participant
 * Last reply from: [Megos](https://wordpress.org/support/users/megos/)
 * Last activity: [3 years, 9 months ago](https://wordpress.org/support/topic/fatal-error-cannot-declare-class-upstream_model_argumentexception/)
 * Status: not resolved