Diary | android diary app | Android library

i just followed a video tutorial on youtube to make a note application and I've done the same exact code with the tutorial. So whenever i want to go to Edit activity from detail activity by clicking the menu icon, the app just crashed and show an error log like this.

I am confused as to how to retrieve the item 'cal' in the row which is deleted on 'onDelete'. using that to generate a total entry. trying to get 'diary.items[offsets].cal'. hopefully I am explaining this.

the code below generates a list of four entries when '+' sign is hit and provides a total field on the top line. my purpose is to decrement the top line accordingly when a row is deleted

I have been trying to solve this error for almost 13 hours, looking for thousands of stackoverflow questions and questions of other communities but I still can't find the answer.
What I'm trying to do is solve nginx not serving static files.
as I said on the top, I tried thousands of answers and none of them seem to work for me.

I post only the scripts in nginx /sites-available/ because I think that is the primary script for this question.

I'm having a hard time figuring out why the code below fails to execute. In VisualStudio I don't get an error, but in the Android emulator I get the error listed in the Title. The code is looping through a list of Map objects as such:

Im trying to use Multer to upload an array of images. At the client side i have a FormData called pictures.

pictures array, from react-native-image-picker:

Im trying to use react hooks useEffect to load my stored data, from reducer store. I noticed that every time the screen is started for the first time, useEffect works normally. But when it gets focus after running navigation.goBack, the hook does not run again. My doubt is, the state of the application has changed, should the react hook not understand this?

im trying to create a func to update my diary record using mongoose.

findOneAndUpdate requires a filter and doc params. Like this:

i just learned how to create a to-do list in java script and as a personal project i wanted to use the information i learned in to-do app making by creating a tell your secret website which like the

I am now learing how to save data in a local database using Room in Android Dev Doc. And I had done the Codelab in this links.https://developer.android.com/codelabs/android-room-with-a-view#0 I can Upddate, Insert, Delete and Query all data in table. Now, I want Query the data with specific id. How should I code in ViewModel and Repository class? Thanks. My table named "Diary", Diary.class