After running truffle unbox react getting error - reactjs

After first initialization of running truffle compile then truffle unbox react getting error Unhandled Rejection (Error): This contract object doesn't have address set yet, please set an address first.
I am trying to install a react dapp so i can learn how to create dapps so i am a beginner but i dont understand why i woulg get an error after first initialization. Also when i ran truffle unbox react it didnt complete it stopped at downloading and didnt do anything after that so it did not set up the box. then i tried truffle unbox react, unhandled rejection and that didnt work so i tried https://www.youtube.com/watch?v=X3vdaNY9KYQ and that didnt work either. To explain I went to ganache and settings and changed the port number to 8545 and then connected to local host 8545 in metamask then i changed my hostname to the numbers in node for on your network because the localhost did not work either. The farthest to a difference i got was connecting to my network and now the page is stuck at loading web3,accounts, and contract and a dialog box popped up and gave me this error.
Failed to load web3, accounts, or contract. Check console for details

Related

INSTALL_FAILED_DUPLICATE_PERMISSION error message

So I've been trying to install the google app via ADB, but when i do it i get the following error:
[INSTALL_FAILED_DUPLICATE_PERMISSION: Package com.google.android.googlequicksearchbox attempting to redeclare permission com.google.android.apps.now.OPT_IN_WIZARD already owned by com.google.android.apps.assistant]
I already tried with another app and it worked, im not really sure why this error shows up. Any help?

react native and expo: problem sending log messages symbolicatedStack

Recently I updated react (0.62.2) and expo (37.0.12). Nearly everything works fine. Except upon every App reload and shortly after an error occured, an error screen pops up that displays
console.error: There was a problem sending log messages to your development environment TypeError:
symbolicatedStack.map is not a function. (In 'symbolicatedStack.map(removeProjectRoot)',
'symbolicatedStack.map' is undefined
covering the previously occured error.
since there is no symbolicatedStack written by myself, I suspect its an internal error, but I can't figure out what it is. Upon pressing "Dismiss" everything works fine again. (Till the next reload/error)
Expo / React version are compatible according to their offical websites.
I guess this is dues to version missmatch try running expo upgrade command. It should resolve your issue.

truffle unbox react, unhandled rejection

I keep getting this error
"Unhandled Rejection (Error): This contract object doesn't have address set yet, please set an address first.
"
when launching truffle unbox react, and also I don't have truffle.js, only have truffle-config.js
Late but hopefully this will answer the question as I have ran into the same issue.
Assuming your metamask extension is enabled, make sure to switch your network to the localhost that is running either ganache-cli or truffle.

React, Firebase Auth error

I have been getting this error when trying to authenticate using firebase with react.
I was able to log in after i updated all the Node_modules, but when i get the logged in user data from firebase i get this error code.
O {code: "auth/argument-error", message: "toJSON failed: First argument must be a valid string."}
I have been creating a file almost identical to this repo.
https://github.com/TaylorRayHoward/ReactReduxMessageBoard/tree/Video2
Even if i run this code, I'm unable to login and i still get the same error.
I have found the solution...
When i was using the redux devtools with google chrome the error came up. Now when i have removed the code from my application, the error does not exist any more.

Yarn test failing - Network request failed

I created a react project using create-react-app however when ran yarn test to see if the initial tests pass I get
TypeError: Network request failed
at XMLHttpRequest.xhr.onerror (/home/ubuntu/wonderland/hackernews/node_modules/whatwg-fetch/fetch.js:436:16)
at XMLHttpRequest.callback.(anonymous function) (/home/ubuntu/wonderland/hackernews/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:289:32)
at invokeEventListeners (/home/ubuntu/wonderland/hackernews/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:219:27)
at invokeInlineListeners (/home/ubuntu/wonderland/hackernews/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:166:7)
at EventTargetImpl._dispatch (/home/ubuntu/wonderland/hackernews/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:122:7)
at EventTargetImpl.dispatchEvent (/home/ubuntu/wonderland/hackernews/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:87:17)
at XMLHttpRequest.dispatchEvent (/home/ubuntu/wonderland/hackernews/node_modules/jsdom/lib/jsdom/living/generated/EventTarget.js:61:35)
at XMLHttpRequest.abort (/home/ubuntu/wonderland/hackernews/node_modules/jsdom/lib/jsdom/living/xmlhttprequest.js:405:16)
at Object.abort (/home/ubuntu/wonderland/hackernews/node_modules/jsdom/lib/jsdom/living/xhr-utils.js:315:13)
at RequestManager.close (/home/ubuntu/wonderland/hackernews/node_modules/jsdom/lib/jsdom/living/nodes/Document-impl.js:146:21)
at Window.close (/home/ubuntu/wonderland/hackernews/node_modules/jsdom/lib/jsdom/browser/Window.js:362:29)
at JSDOMEnvironment.dispose (/home/ubuntu/wonderland/hackernews/node_modules/jest-environment-jsdom/build/index.js:44:19)
at Promise.resolve.then (/home/ubuntu/wonderland/hackernews/node_modules/jest-cli/build/runTest.js:102:17)
I'm working in Cloud9 editor using ssh connected to my dev server (Ubuntu) hosted in AWS. Tests are working fine in my local machine (Ubuntu).
Thanks for the help!
I already solve my problem. I'm following a book entitled "The Road to Learn React" and I think that the one causing my error is the part where I fetch data from an external API. The book forgot to include an import for fetch which is this one:
import fetch from 'isomorphic-fetch'
Then, it solves my problem like a charm.

Resources