close

[Solved] TypeError: Failed to execute fetch on Window: Invalid value

Hello Guys, How are you all? Hope You all Are Fine. Today I get the following error TypeError: Failed to execute fetch on Window: Invalid value in reactjs. So Here I am Explain to you all the possible solutions here.

Without wasting your time, Let’s start This Article to Solve This Error.

How To Solve TypeError: Failed to execute fetch on Window: Invalid value Error ?

  1. How To Solve TypeError: Failed to execute fetch on Window: Invalid value Error?

    To Solve TypeError: Failed to execute fetch on Window: Invalid value Error This happened when I tried to add an Authorization header to my fetch calls. In my case, it was caused by a newline character in the header string, i.e. Bearer:\nsomelong-token. Changing the new line to space solved the problem.

  2. TypeError: Failed to execute fetch on Window: Invalid value

    To Solve TypeError: Failed to execute fetch on Window: Invalid value Error This happened when I tried to add an Authorization header to my fetch calls. In my case, it was caused by a newline character in the header string, i.e. Bearer:\nsomelong-token. Changing the new line to space solved the problem.

Solution 1

This happened when I tried to add an Authorization header to my fetch calls. In my case, it was caused by a newline character in the header string, i.e. Bearer:\nsomelong-token. Changing the new line to space solved the problem.

Solution 2

I had an invalid character in a key of the header object. I accidentally included the “:” and this throws the error described. Really difficult to visually see in the chrome console. Hope it helps someone.

{ 'Authorization:':'Bearer etc...' }

Solution 3

this when passing a string with a newline character into the header object for example:

const myString = 'this is a string \nand this is a new line';
headers: {
    'Content-Type': 'application/json',
    'Authorization': `Bearer ${token}`,
    'subscriptionId': myString
}

Summery

It’s all About this issue. Hope all solution helped you a lot. Comment below Your thoughts and your queries. Also, Comment below which solution worked for you? Thank You.

Also, Read

Leave a Comment