Getting error while uploading video file

Team, I am getting the below error message while trying to upload a video of 72 MB Size. I could upload the same video on the main domain, but the subdomain instance is giving the below error. I have already increased the file upload_max_size and post_max_size to 128 MB, max execution time to 300 using the hosting provider CPanel (GoDaddy). This subdomain is created to have an online training marketplace (like Udemy), so uploading large video is mandatory

Unexpected response from the server. The file may have been uploaded successfully. Check in the Media Library or reload the page.

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