please explain is there any difference in meaning

[new2grammar]

Original sentence from newspaper:
Not only are there delays in setting up new infrastructure, what exists is not being utilised effectively.
Is it ok if I use 'there are' instead of 'are there' in the above sentence does it change the meaning of the sentence or both forms is acceptable?

[Soup]

The subject-verb pair is inverted with "not only":

Ex: not only are there <inverted/switched around>
Ex: not only there are <not inverted>