Getting Firebase page issues even if index.html is found

Question

I use Firebase hosting to deploy the application. The index.html file is in the root directory, and firebase.json is in the standard format.

{ "firebase": "memorytext", "public": ".", "ignore": [ "firebase.json", "**/.*", "**/node_modules/**" ] } 

Despite the fact that the deployment process on the command line node runs smoothly (without warning that the index.html file is missing), after opening, I constantly see a page error not found.

Can someone instruct me on how to solve this problem?