Can't upgrade from Yii 2.0.6 to latest version

Yii 2.0 Installation and Setup
1

I’m trying to upgrade my Yii version 2.0.6 to latest version via composer but I keep getting this error:

Updating yiisoft/yii2 (2.0.6 => 2.0.15.1): Update failed (Failed to execute git status --porcelain --untracked-files=no fatal: Unknown index entry format db560000

Would you like to try reinstalling the package instead [yes]?

I type yes and it removes my yii2 completely

See image: https://www.dropbox.com/s/7vu1ng28xy377h5/Screenshot%202018-03-23%2018.27.20.png?dl=0

All the dependencies are updated and working, it’s just yii that is not upgrading.

I tried to upgrade from 2.0.6 to 2.0.7 but the same thing. I have this in my composer.json:

"require": {

"yiisoft/yii2": ">=2.0.7"

}

Any clue?

2

It’s fixed. I had to go to:

/vendor/yiisoft/yii2/.git folder, delete index and do a git reset