Tracker error “100 Invalid payload string. Try clearing your WordPress cache”

  • Resolved swissspaceboy

    (@swissspaceboy)


    6 years, 6 months ago

    Hello,

    I have seen this tracker error just popping up:
    100 Invalid payload string. Try clearing your WordPress cache

    I have this error since I want to track an external page with Slimstat (subfolder inside WP, not a subdomain). I added the required JS code to my HTML page, as I usual do. Now for this website, I cannot track that external webpage.

    What is the reason for this error? How to reset the WP cache? I have no cache plugins, except Autoptimize and OPCache. Both have been flushed. Same result.

    I am using an older version of the plugin as my website is still v4.8. The latest version requires v4.9 min so I need to upgrade first.

    Thanks for any help.

    Didier.

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