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I'm working on making a social media clone and when I'm trying to follow another profile I'm getting thrown an error. When I try to console.log("follow user") it'll work just fine but when I change it to onClick={handleFollowUser} it'll throw an error saying that something is undefined.

You can view the specific error here: https://imgur.com/Lit4iqv

The error I get is:

Unhandled Rejection (FirebaseError): Function FieldValue.arrayUnion() called with invalid data. Unsupported field value: undefined (found in document users/pX1fay49L6fLiYwnzIXL)

Sorry for the heavy text. All of my router-views work, except for one, which shows blank. I do not see any console errors of warnings and the format is identical between views - the only difference is the template. This was working, but I started a new project because my package.json and dependencies got messy. I've read through the code ad nauseum and I just can't work out why it wont show. The code is condensed as there's lots. If you prefer, here's a link to a sandbox: https://codesandbox.io/s/condescending-monad-5o8qw

I have a project where I must read PDF from URLs or Blobs, and Extract the Text from them to use then Azure Cognitive Indexing / Search/ I am following the Examples using Computer Vision and only able to parse and extract text from Image Files. I have looked around and I see that there is some mention of this Capability, but it is very sparse, there is no Github example I can find that does PDF documents.

Any suggestions or pointers on where to look. I know Amazon has Textetract but my client is Azure-based, and I don't really want to use Syncfusion tools if I can help it.

so I have tried the following. Validation is just a warpper class I was trying to simplify the return of the object,

• Photos Work, _ Read Text from URl Works if its a photo based .png, jpg but no PDF.

Your help is greatly appreciated

There is a problem that I have been dealing with for 2 days but could not solve. I am creating a quiz app where you can choose from 4 options. The program works correctly when I make the first choice. but when I make the second choice it reacts as if I clicked it twice. When I make the third choice it reacts as if I clicked it 3 times. I only made two choices, but the program makes it look like I made 3 choices.

HTML Code

I'm trying to create an internal link to scroll to bottom highlight a tag. When I try the code above it doesn't highlight, I have to refresh the page to make it work.

I want to scrape all existing text of a few drop down menu given by this web page. The structure is quite simple and I've also reviewed the answers given before but my result is zero. The code is:

I am scraping college basketball player images and https://unfospreys.com/sports/womens-basketball/roster/2020-21 is one of the many pages with these images. Unfortunately, the 15th player on this page, Britney Gore, does not have a player image. As a result, the above data.frame() is not created because the column imgSrc is length 14 and the column playerName is length 15. (you can run the code separately for each column in the data.frame() and each line works individually).

Currently, I am trying to build a gallery using React Material UI (with Card, ...). I have some issues to make the gallery responsive, as I might have different cover sizes :

Here is the code I used :

My card implementation :

I can't send value to another page. locID, tourInfo, userName, userEmail I want to send this value. But I'm new to react-native, I don't know.

I want to post information in a different Componen.

Mapview.js (locID, tourInfo,) => ShowInfo.js

You can help me if you study the code. Actually, I have to do something very simple, but I don't know what to do.

I need to send the variables (locID and tourInfo) to the ShowInfo.js Page. To open my location on the map.

Mapview.js