ReferenceToken::fromString(): Argument #1 ($value) must be of type string, int given, called in vendor/ergebnis/json-normalizer/src/SchemaNormalizer.php on line 237

[alexis-saransig-lullabot]

Steps required to reproduce the problem

1. Run composer normalize --no-update-lock

This is an update required after upgrading Drupal Core to 9.5.

Expected Result

• Successfully normalized ./composer.json.

Actual Result

 [TypeError]                                                                                                                                                                                               
  Ergebnis\Json\Pointer\ReferenceToken::fromString(): Argument #1 ($value) must be of type string, int given, called in /var/www/html/vendor/ergebnis/json-normalizer/src/SchemaNormalizer.php on line 237 

Exception trace:
  at /var/www/html/vendor/ergebnis/json-pointer/src/ReferenceToken.php:63
 Ergebnis\Json\Pointer\ReferenceToken::fromString() at /var/www/html/vendor/ergebnis/json-normalizer/src/SchemaNormalizer.php:237
 Ergebnis\Json\Normalizer\SchemaNormalizer->normalizeObject() at /var/www/html/vendor/ergebnis/json-normalizer/src/SchemaNormalizer.php:113
 Ergebnis\Json\Normalizer\SchemaNormalizer->normalizeData() at /var/www/html/vendor/ergebnis/json-normalizer/src/SchemaNormalizer.php:214
...

[localheinz]

@alexis-saransig-lullabot

Do you have an example composer.json where you observed the issue?

[alexis-saransig-lullabot]

Hi @localheinz, here I leave the file so you can review it.
composer.json.zip
Thanks in advance.

[fredden]

From what I can tell, this composer.json is enough to reproduce the bug.

{
    "repositories": {
        "0": {
            "type": "composer",
            "url": "https://packages.drupal.org/8"
        }
    }
}