Deliberate mistake: At least twice the protagonist uses the bus n*38 who brings him in and out of his new neighbourhood and that has on its side an ad banner. The banner pays homage to the movie Roger Spottiswoode directed before this one (in 2014, so it'd be an anachronism given this movie's events), but it stands out for not being done properly. The first time we see it it does not have proper 'credits', copywrite, tagline, to the point that it's not possible to understand what does it advertise, the second time it does have some writing. The title quoted is also wrong, since it's written as "The Midnight Sun", while the title before re-release was "Midnight Sun." (00:11:40 - 00:38:30)
Deliberate mistake: Some odd legal matter must be involved here; when we see the two ladies look at the viral video, one tells the other to look at the "Youtube" sensation with over a million views, but the website shown is not Youtube but an obvious knockoff version. (01:19:30)