When I tried to update my site, display following error.

One or more of the Cache Types are invalidated: Blocks HTML output. Click here to go to Cache Management and refresh cache types.

How to fix this issue permanently?

Error Message


There is nothing to fix, this is not an error, magento is letting you know that you need to flush cache to see the latest changes.

Read this: https://blog.amasty.com/magento-cache-explained-a-guide-for-store-owners/

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  • 2
    block_html invalidates every time the magento cronjob runs. So this rather is a problem that needs fixing. – mniess Oct 21 '16 at 14:48

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