Unable to import Elementor Template file! Showing errors!

Hello,

I am trying to import Elementor Template file and I am getting the following error in console and the website display white screen error! THis occurs when I am trying to import JSON template file from Template >> Saved Template section from WordPress admin.

An attempt was made to declare a non-UTF-8 encoding for JSON retrieved using XMLHttpRequest. Only UTF-8 is supported for decoding JSON.

When I am adding template via elementor editor I see the following error in browser console :

Object { message: "", code: "", data: [] }
common.min.js:2:130353
    consoleError https://website.com/wp-content/plugins/elementor/assets/js/common.min.js?ver=3.5.6:2
    notify https://website.com/wp-content/plugins/elementor/assets/js/common.min.js?ver=3.5.6:2
    applyAfterCatch https://website.com/wp-content/plugins/elementor/assets/js/common.min.js?ver=3.5.6:2
    onCatchApply https://website.com/wp-content/plugins/elementor/assets/js/common.min.js?ver=3.5.6:2
Uncaught (in promise) 
Response { type: "basic", url: "https://website.com/wp-json/elementor/v1/site-editor/templates", redirected: false, status: 500, ok: false, statusText: "Internal Server Error", headers: Headers, body: ReadableStream, bodyUsed: false }

Website has following version of Elementor activated:

Elementor : Version 3.5.6( Upgrading the latest version breaks the site)
Elementor Pro: Version 3.6.3 ( Unable to update this also as it will not work with commmunity version of Elementor Pro)

I am unable to import the template files. Any insight and help would be appreciated.

Thanks
Dipak

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