Failed to set the 'value' property on 'HTMLInputElement'

I was getting this error, and just got it resolved. At least for me it was because on my input I had a 'value' in the input field set to this.state.image like this:

          <label htmlFor='image'>
                    Image
                    <input 
                        type='file' 
                        id='file' 
                        name="file"
                        placeholder="Upload an Image" 
                        required 
                        value={this.state.image}
                        onChange={this.uploadFile}
                        />
                </label>

After I removed the line of value={this.state.image}

it started working.

Hope this helps.

In case you could not get access to @wolghoundjesse stackblitz, you have to remove the [(ngModel)]="examen_bestand" from the input and get the file name from the fileChanged($event) in the TS:

fileChanged(file){
     this.examen_bestand = file.target.files[0].name;
     ... 
}

https://github.com/angular/angular/issues/6074#issuecomment-347187761

Remove ngModel. Here is a stackblitz you likely don't need at this point. :)