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Fatal exception of type "MWException" on fr.wikipedia when trying to move a page to a page that already exists
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Description

When trying to rename page A to page B, and the page B already exists and that we check the checkbox "Yes, delete the page", we get Fatal exception of type "MWException". We have to manually delete page B to be able to rename page A.
Some vandals/LTA are exploiting this bug to annoy and waste admins' time, please fix.

Steps to reproduce the bug:

  1. Try to rename page A to a title of a page that already exists (let's call it "page B") and click "Move page"
  2. MediaWiki tells you that "The destination page B already exists. Do you want to delete it to make way for the move?"
  3. Check the checkbox "Yes, delete the page" and click "Move page"

Expected result
Page B deleted and page A moved with the title of page B.

Actual Result
Fatal exception of type "MWException"

Event Timeline

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptDec 2 2018, 11:35 AM
Aklapper changed the task status from Open to Stalled.Dec 2 2018, 11:58 AM

Please always include complete error messages. Nothing can be done without a complete error message.

Please always include complete error messages. Nothing can be done without a complete error message.

Here's an example: [XAPJpgpAMFQAAKUlPCUAAABB] 2018-12-02 12:01:43: Erreur fatale de type « MWException »

Thanks! For XAPJpgpAMFQAAKUlPCUAAABB this is T210739.

mmodell changed the subtype of this task from "Task" to "Production Error".Aug 28 2019, 11:07 PM