Hi  There I am super frustrated as can't seem to find a solution to this problem I am having. I updated my google chrome because it was being jerky and freezing but now with the newly updated chrome every time I go to upload a thumbnail for my youtube videos it says:
'Try Again' Unexpected end of JSON input

I'm making and uploading thumbnails the same way I have been doing for the past 4 years and now suddenly this crap? Anyone have a solution/fix for these stupid errors?

I am beyond pissed! Oh and don't give me the use a different browser crap either I want an actual fix or I'm wiping chrome out of existence

Whenever I try to change my YouTube's thumbnail picture, I just can't and gives me this error: "Unexpected end of JSON input"

I believe this problem is not youtube creators. It happens to me all the time using Chrome. It is affecting quite a lot of browser-specific, but obviously not the majority or youtube would have noticed it. It is probably a bug in Chrome's client Javascript or in their server code. The error is obviously given by json.parse

Is the issue reproducible on the latest version of Chrome?

*Yes, If you are thing that this issue comes when we are using chrome browser then You are going right
*if here we use change youtube video thumbnail in a different browser like official windows internet explorer where you cannot face this error while changing video thumbnails. same as you are doing in chrome and there was comes error as well same steps you did in internet explorer you got success so
is that clear this (Unexpected end of JSON input) error is having in chrome browser only.

Follow Steps to Fix  Unexpected end of JSON input  On YouTube Thumbnail in chrome 

1. Upload A Video To YouTube
2. Go To YouTube Studio (Old one)
3. Try to change the thumbnail

2 Different methods for Fix Unexpected end of JSON input On YouTube Thumbnail error 

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