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Hi @mcdeth

The only other time I’ve seen that error is when the site was running into a memory issue. There is an option to add a delay in the Bulk Optimizer window. Can you try putting a delay in between each image and trying again?

Thanks for prompt reply. Will try if this solution won’t help

function extend_nonce_life() {
    return 4 * DAY_IN_SECONDS; // Extends the nonce life to 48 hours
}
add_filter( 'nonce_life', 'extend_nonce_life' );

Checking in to see how you are getting on. Have things been working better?

setting nonce life *helped*, but it was still interrupted after 3 days, at around 80%. Since I’ve tried earlier twice, at the end I had $300 vps running for a week at CPU peaks for nothing.

So this morning I found out process was interrupted. There’s a retry button which generated url with few k GET params. Even if I tried to regenerate only one id, I had problems with link expired, changing nonce didn’t help. Eventually gave up, spent $50 and bought shortpixel pro version for thumbs + $20 for webp.

It’s quite ironical, because most of the garbage was created by this plugin. What the description doesn’t mention is, when user regenerates thumbnail, it generates literally every registered size, even if post is attached to product and some media sizes are for registered for blog posts. My blog posts had 50×50 thumbs that come from swatches plugin.

So to sum up, started with 1.5m files and ended with 500k after proper cleaning. If I had webp plugin on, it’d be 3m files.

Given that EWWW has a nonce refresh built-in and now having a little more information and having seen a different question posted in the other support, I think you are referring to the Force Regenerate Thumbnails plugin for all of this.