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I cannot convert div blocks to link blocks

Hello, I am new to webflow and practising a sample project.
Webflow crashes and displays an error message whenever I try to convert a div block to a link block.
Please help me get over this snag,
Thank you.
Here is my shareable link
https://preview.webflow.com/preview/webflow-course-0e05df?utm_medium=preview_link&utm_source=dashboard&utm_content=webflow-course-0e05df&preview=aa50ebd449b4b920d2af5db467222df1&mode=preview


Here is my site Read-Only: LINK
(how to share your site Read-Only link)