'How to solve "The byte stream was erroneous according to the character encoding that was declared"?

In my mozilla log, I get the following error:

The byte stream was erroneous according to the character encoding that was declared. The character encoding declaration may be incorrect.

image

Meanwhile, under my doctype meta is UTF8 charset declared:

<!DOCTYPE html><html lang="en"><head prefix="og: http://ogp.me/ns# article: http://ogp.me/ns/article# fb: http://ogp.me/ns/fb# website: http://ogp.me/ns/website#"><meta charset="utf-8"><meta name="viewport" content="width=device-width, height=device-height, initial-scale=1.0"><meta name="msvalidate.01" content="232BB6672CFDF39D90402F9473F59D51"><title>What are the Terms of the Covenant of Settlement ? :. Bishop David Oyedepo, Questions and Answers, + Pdf</title>

I am using <meta charset="utf-8">. Why am I getting this error, and how can I solve it?



Solution 1:[1]

In my case, in Mozilla, I found one accented character that logged the same message (รก). It was after a remark (//).

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Source: Stack Overflow

Solution Source
Solution 1 ouflak