FATAL Error! Help?

Hello, I can’t seem to your plugin on my site. My site has 48.089 images and the indexing fails all the time. What Should I do?

Here’s the log:

[0.2655] Info: WP_Query results written to log
[0.0000] Registered sizes: [“thumbnail”,”medium”,”medium_large”,”large”,”amp_big_img”,”wp_review_large”,”wp_review_small”,”herald-lay-a”,”herald-lay-a-full”,”herald-lay-b”,”herald-lay-b-full”,”herald-lay-b1″,”herald-lay-b1-full”,”herald-lay-c1″,”herald-lay-c1-full”,”herald-lay-d”,”herald-lay-d-full”,”herald-lay-d1″,”herald-lay-d1-full”,”herald-lay-f”,”herald-lay-f-full”,”herald-lay-g1″,”herald-lay-g1-full”,”herald-lay-i-full”,”herald-lay-i1″,”herald-lay-i1-full”,”herald-lay-single”,”herald-lay-single-full”,”herald-lay-page”,”herald-lay-page-full”,”herald-lay-fa1″,”herald-lay-fa1-full”,”herald-lay-fa3-big”,”herald-lay-fa3-big-full”,”herald-lay-fa3-small”,”herald-lay-fa3-small-full”,”herald-lay-fa5″,”herald-lay-fa5-full”,”mailpoet_newsletter_max”,”full”]
[0.0002] Meta indexed so far: 1 / 48089
[0.0074] Sample meta:
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[0.0004] Uknown error: Please see returned value below
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