• For the past week our users have been getting an error message when uploading images.

    Error states “Could not verify the request checksum. Please refresh the page and try again.”

    We can’t figure out what is causing the issue. We have this page excluded from all caching plugins and it still isn’t working.

    Any ideas how to figure out the issue, what may be causing this, or how to get this back working again??

    The page I need help with: [log in to see the link]

Viewing 7 replies - 1 through 7 (of 7 total)
  • Thread Starter kochanck27

    (@kochanck27)

    The plugin or something interacting with it also seems to be automatically creating literally thousands of our add listing pages.

    Currently, there are 3,243 duplicate pages are in the pending pages that are all duplicates of our “add-listing” page.

    This is the only page being duplicated and more seem to be added every time someone tries to add a listing to our classifieds.

    Plugin Author Greg Winiarski

    (@gwin)

    Hi,
    1. the checksums are based on WordPress nonces, so assuming you do not have any custom plugin/code to handle nonces, they depend only on the time when they were generated and the user id (if the user is logged in).

    Disabling all kinds of caches (like you did) should fix all of the problems with the checksums.

    Can you send some additional details regarding the issue: are the users experiencing this problem logged-in? do they see this error here https://www.skoolielivin.com/add-listing/ (that is they load the page click on adding the image and see the error)?

    2. this is, unfortunately, an error we are trying to track for a while now, but since only a few users experienced it (around 5 now) and for all of them it happened only twice max, but usually only once and then never again so it is hard to get to the bottom of it.

    We have an issue on GitHub opened specifically for this problem (although so far only one user commented) here https://github.com/simpliko/wpadverts/issues/121, if you can replicate this problem then your input would be incredibly valuable.

    The page i linked to also has a download link for a plugin which will allow you to quickly delete the replicated pages.

    That’s weird, it’s always the same amount of duplicate pages each time. I finally stop mine (crossing fingers). Still not sure what I did to stop it.

    Thread Starter kochanck27

    (@kochanck27)

    Can you send some additional details regarding the issue: are the users experiencing this problem logged-in? do they see this error here https://www.skoolielivin.com/add-listing/ (that is they load the page click on adding the image and see the error)?

    They are trying to add listings as non-logged in, new users. So people just coming to that page to create a listing and it was happening when they tried to upload images. I was able to replicate it once for myself in an incognito window. I cleared the caches and then it worked, so I went through and tried to block that page from being cached by Cloudflare and WP Rocket. Hoping this will help/stop it then. I am waiting on two users to try inserting their ad and see if this worked.

    2. this is, unfortunately, an error we are trying to track for a while now, but since only a few users experienced it (around 5 now) and for all of them it happened only twice max, but usually only once and then never again so it is hard to get to the bottom of it.

    This is duplication of the Add Listing page is actually our second time with this issue, too. The first was back around June/early July. I went through and tried to clear caches and disabled a plugin – I believe the Duplicate Page plugin that I had active back then thinking they were interacting. The Duplicate Page plugin is not active and it happened again sort of randomly. I’ll keep an eye on it and let you know if it starts duplicating pages again.

    It’s just weird that both issues happened around the same time.

    Plugin Author Greg Winiarski

    (@gwin)

    Hi,
    1. ok please let me know if the users will be able to post the Ads without the checksum error. In case of logged out users the nonces depend on the current time only, so if a page with [adverts_add] is cached for over 24 hours the user who will visit a page will use expired nonce and he will see a checksum error.

    2. I do agree the Duplicate Pages extension is not a problem, other users experiencing this issue did not have it installed.

    So far i am pretty sure this happens when adding an Ad from a page with [adverts_add] and that this is some kind of infinite loop, but cannot pin down where does it start and why :/

    Anyway, any additional details regarding this issue will be highly appreciated :).

    Thread Starter kochanck27

    (@kochanck27)

    Hi Greg,

    Removing https://www.skoolielivin.com/add-listing/ from all caching plugins/services did seem to do the trick. We did have an ad come through from a random person and it seemed to have worked for them to submit their ad.

    Unfortunately, it created another few thousand duplicates of this page with the ad submission form on it.

    Do you know of anything I could do to try and track the loop occurring that is creating all of these pages?

    I’d love to dive into this a bit more as it seems to be continuing on our site.

    Thanks,
    Chris

    Plugin Author Greg Winiarski

    (@gwin)

    Hi,
    ok, so it seems that at least one problem is solved.

    Can you send me via the contact form at https://wpadverts.com/contact/ the list of plugins you have installed? I will try to cross-reference it with other sites i know had this problem.

    I will also send you back some plugin which will try to trace back the error or prevent it in the first place.

Viewing 7 replies - 1 through 7 (of 7 total)
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