Unexpected top-level property "overrides[0].extends"

[JuliaUsanova]

Hi! I have a bug "Unexpected top-level property overrides[1].extends." reproduced in eslint@7.29.0.

Project framework: angular 11,
eslint: 7.29.0

npm ls eslint
most_new@0.0.0 /Users/Julia_Usanova/WebstormProjects/most-new
└── eslint@7.29.0 

"devDependencies": {
		"@angular-devkit/build-angular": "0.1102.2",
		"@angular-devkit/build-ng-packagr": "0.1002.0",
		"@angular-eslint/builder": "1.2.0",
		"@angular-eslint/eslint-plugin": "1.2.0",
		"@angular-eslint/eslint-plugin-template": "1.2.0",
		"@angular-eslint/schematics": "1.2.0",
		"@angular-eslint/template-parser": "1.2.0",
		"@angular/cli": "11.1.4",
		"@angular/compiler-cli": "11.1.2",
		"@angular/language-service": "11.1.2",
		"@particle/lint": "1.1.4",
		"@types/chart.js": "^2.9.16",
		"@types/jasmine": "^3.7.7",
		"@types/lodash": "^4.14.170",
		"@types/moment": "^2.13.0",
		"@types/node": "12.11.7",
		"@types/request": "^2.48.5",
		"@typescript-eslint/eslint-plugin": "^4.28.0",
		"@typescript-eslint/parser": "^4.28.0",
		"eslint": "^7.29.0",
		"eslint-config-prettier": "8.1.0",
		"eslint-plugin-import": "2.22.1",
		"eslint-plugin-jsdoc": "30.7.6",
		"eslint-plugin-prefer-arrow": "1.2.2",
		"eslint-plugin-prettier": "3.3.1",
		"husky": "6.0.0",
		"karma": "^6.3.4",
		"karma-chrome-launcher": "~3.1.0",
		"karma-coverage": "^2.0.3",
		"karma-jasmine": "~4.0.1",
		"karma-spec-reporter": "~0.0.32",
		"lint-staged": "~10.5.4",
		"loader-utils": "^2.0.0",
		"prettier": "~2.2.1",
		"protractor": "5.4.4",
		"ts-node": "7.0.1",
		"typescript": "4.1.5",
		"webpack-bundle-analyzer": "^4.4.2",
		"webpack-cli": "^4.7.2"
	}

The project eslint.json file:

{
	"root": true,
	"env": {
		"node": true,
		"browser": true
	},
	"overrides": [
		{
			"files": ["*.ts"],
			"parserOptions": {
				"project": ["tsconfig.json", "e2e/tsconfig.json"],
				"createDefaultProgram": true
			},
			"extends": [
				"eslint:recommended",
				"plugin:@angular-eslint/recommended",
				"plugin:@typescript-eslint/recommended",
				"plugin:@typescript-eslint/recommended-requiring-type-checking",
				"plugin:@angular-eslint/template/process-inline-templates",
				"prettier"
			],
			"plugins": ["eslint-plugin-import"],
			"rules": {
				"@angular-eslint/component-selector": [
					"error",
					{
						"type": "element",
						"prefix": ["app"],
						"style": "kebab-case"
					}
				],
				"@angular-eslint/directive-selector": [
					"error",
					{
						"type": "attribute",
						"prefix": "app",
						"style": "camelCase"
					}
				],
				"no-shadow": "off",
				"indent": [
					"error",
					"tab",
					{
						"SwitchCase": 1
					}
				],
				"no-underscore-dangle": [
					"error",
					{
						"allow": ["__ACS__", "__byUrl", "_sendProcessEventMessage", "_chart"],
						"allowAfterThis": true,
						"allowFunctionParams": true
					}
				],
				"@typescript-eslint/no-unsafe-return": "warn",
				"@typescript-eslint/no-unsafe-assignment": "warn",
				"@typescript-eslint/no-unsafe-call": "warn",
				"@typescript-eslint/no-empty-function": "warn",
				"@typescript-eslint/no-unsafe-member-access": "error",
				"@typescript-eslint/no-floating-promises": "warn",
				"@typescript-eslint/unbound-method": "warn",
				"@typescript-eslint/restrict-template-expressions": "error",
				"@typescript-eslint/restrict-plus-operands": "error",
				"@typescript-eslint/ban-ts-comment": "off",

				"@typescript-eslint/no-unused-expressions": [
					"error",
					{
						"allowTernary": true,
						"allowShortCircuit": true
					}
				],
				"@typescript-eslint/consistent-type-definitions": "error",
				"@typescript-eslint/explicit-member-accessibility": [
					"off",
					{
						"accessibility": "explicit"
					}
				],
				"@typescript-eslint/member-delimiter-style": [
					"off",
					{
						"multiline": {
							"delimiter": "none",
							"requireLast": true
						},
						"singleline": {
							"delimiter": "semi",
							"requireLast": false
						}
					}
				],
				"@typescript-eslint/no-non-null-assertion": "off",
				"@typescript-eslint/prefer-for-of": "off",
				"@typescript-eslint/semi": ["off", null],
				"@typescript-eslint/naming-convention": [
					"error",
					{
						"selector": "enumMember",
						"format": ["PascalCase"]
					}
				],
				"@typescript-eslint/type-annotation-spacing": "off",
				"@typescript-eslint/no-shadow": [
					"error",
					{
						"ignoreTypeValueShadow": true
					}
				],
				"arrow-parens": ["off", "always"],
				"brace-style": ["off", "off"],
				"curly": "off",
				"eol-last": "off",
				"guard-for-in": "off",
				"import/order": "error",
				"linebreak-style": "off",
				"max-classes-per-file": "off",
				"max-len": [
					"warn",
					{
						"code": 120,
						"tabWidth": 4,
						"ignoreComments": true,
						"ignoreTrailingComments": true,
						"ignoreStrings": true
					}
				],
				"comma-dangle": ["error", "never"],
				"quotes": ["error", "single"],
				"new-parens": "off",
				"newline-per-chained-call": "off",
				"no-extra-semi": "error",
				"no-irregular-whitespace": "off",
				"no-trailing-spaces": [
					"error",
					{
						"ignoreComments": true
					}
				],
				"object-shorthand": ["error", "always"],
				"padding-line-between-statements": [
					"off",
					{
						"blankLine": "always",
						"prev": "*",
						"next": "return"
					}
				],
				"prefer-arrow/prefer-arrow-functions": "off",
				"quote-props": "off",
				"space-before-function-paren": "off",
				"space-in-parens": ["off", "never"]
			}
		},
		{
			"files": ["*.html"],
			"extends": ["plugin:@angular-eslint/template/recommended"],
			"rules": {}
		},
		{
			"files": ["*.js"],
			"extends": ["eslint:recommended", "prettier"],
			"plugins": [],
			"rules": {
				"no-unused-vars": "warn",
				"no-redeclare": "warn",
				"space-before-function-paren": [
					"error",
					{
						"anonymous": "never",
						"named": "never",
						"asyncArrow": "always"
					}
				],
				"space-in-parens": ["off", "never"]
			},
			"parserOptions": {
				"sourceType": "module",
				"ecmaVersion": 6
			}
		},
		{
			"files": ["*.html"],
			"excludedFiles": ["*inline-template-*.component.html"],
			"extends": ["prettier"],
			"plugins": ["prettier"],
			"rules": {
				"prettier/prettier": [
					"error",
					{
						"parser": "angular"
					}
				]
			}
		}
	]
}

The error in terminal when running eslint .:

ESLint configuration in /Users/Julia_Usanova/WebstormProjects/most-new/.eslintrc.json is invalid:
        - Unexpected top-level property "overrides[1].extends".

Error: ESLint configuration in /Users/Julia_Usanova/WebstormProjects/most-new/.eslintrc.json is invalid:
        - Unexpected top-level property "overrides[1].extends".

What I've tried to do to find the issue roots:

1. comment out the "extends" property in every overrides element. - The error disappears then.
2. set an empty string / empty array as a value in "extends" property. - The error appears
3. remove several plugins, leave only "eslint:recommended" value in "extends" property. - The error appears.