Checkout Page Blank when extension is ENABLED

[rishabhchd19]

On enabling the Extension and API Key, the Checkout page doesn't display it the page shows blank there.
Magento 2.2.2, PHP 7.1.14

Error in System.log:
[2018-02-21 07:16:02] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi does not exist [] []
[2018-02-21 07:16:02] main.CRITICAL: Invalid block type: CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi [] []
[2018-02-21 07:16:22] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi does not exist [] []
[2018-02-21 07:16:22] main.CRITICAL: Invalid block type: CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi [] []
[2018-02-21 07:16:47] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Checkout\LayoutProcessor does not exist [] []
[2018-02-21 07:16:47] main.CRITICAL: Invalid block type: Magento\Checkout\Block\Onepage [] []
[2018-02-21 07:16:47] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi does not exist [] []
[2018-02-21 07:16:47] main.CRITICAL: Invalid block type: CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi [] []
[2018-02-21 07:17:13] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Checkout\LayoutProcessor does not exist [] []
[2018-02-21 07:17:13] main.CRITICAL: Invalid block type: Magento\Checkout\Block\Onepage [] []
[2018-02-21 07:17:13] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi does not exist [] []
[2018-02-21 07:17:13] main.CRITICAL: Invalid block type: CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi [] []
[2018-02-21 07:17:21] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Checkout\LayoutProcessor does not exist [] []
[2018-02-21 07:17:21] main.CRITICAL: Invalid block type: Magento\Checkout\Block\Onepage [] []
[2018-02-21 07:17:21] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi does not exist [] []
[2018-02-21 07:17:21] main.CRITICAL: Invalid block type: CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi [] []
[2018-02-21 07:17:36] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Checkout\LayoutProcessor does not exist [] []
[2018-02-21 07:17:36] main.CRITICAL: Invalid block type: Magento\Checkout\Block\Onepage [] []
[2018-02-21 07:17:36] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi does not exist [] []
[2018-02-21 07:17:36] main.CRITICAL: Invalid block type: CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi [] []
[2018-02-21 07:17:40] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Checkout\LayoutProcessor does not exist [] []
[2018-02-21 07:17:40] main.CRITICAL: Invalid block type: Magento\Checkout\Block\Onepage [] []
[2018-02-21 07:17:40] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi does not exist [] []
[2018-02-21 07:17:40] main.CRITICAL: Invalid block type: CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi [] []
[2018-02-21 07:18:18] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Checkout\LayoutProcessor does not exist [] []
[2018-02-21 07:18:18] main.CRITICAL: Invalid block type: Magento\Checkout\Block\Onepage [] []
[2018-02-21 07:18:18] main.CRITICAL: Class CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi does not exist [] []
[2018-02-21 07:18:18] main.CRITICAL: Invalid block type: CtiDigital\GoogleAddressLookup\Block\Js\GoogleApi [] []

[rishabhchd19]

Any clue???

[bartoszherba]

You could try to dump composer's autoload.