You asked me if there was an actual case which raises the arguments that state laws were not followed and I believe that I have provided you with one.
You can also probably look at the recent motion filed by AG Paxton in Texas[1], which similarly makes claims that election officials were processing ballots in an unlawful way.
Whether or not the arguments make you worry doesn't change the fact that both of these cases allege that election laws were broken.
[1] https://www.texasattorneygeneral.gov/sites/default/files/ima...
For example if you read into the next complaint, 142 is strictly factual (which can still be rebutted, but probably won't be), while 145/149 argue why those (factual) actions were unlawful, in support of the complaint's title (the rest are somewhere in the middle, or more handwavey). If you read 142-149, you come away seeing a coherent argument backing up the claim.
But for the previous complaint - it's a claim the law was violated, a citation of the law, and then no supporting argument or evidence detailing how or why the law has been violated. I'm guessing it can be amended or argued verbally, but as it stands it's an unsupported claim.