The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

Nullability of type of parameter 'obj' doesn't match overridden member (possibly because of nullability attributes).

Non-nullable field '_spriteBatch' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'Game' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'foregroundTilemap' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'backgroundTilemap' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'blockSprite' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field 'spriteSheet' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Dereference of a possibly null reference.

Cannot convert null literal to non-nullable reference type.