MS Access having error when creating web form

Hello.
I have found this error while trying to create a web form:

Error:
Microsoft Access
There was an error creating your form.
Some fields may have been skipped because there was en error getting informaticn about them or because they didnt fit on the form.
OK
After clicking OK, I found the web form in edit mode but I'm unable to save it.
Response needed.
Thanks.
