Contradiction with Exodus 3:5
This verse mirrors Joshua 5:15 instead of contradicting it; both passages involve removing sandals on holy ground.
Exodus 3:5: And he said, Draw not nigh hither: put off thy shoes from off thy feet, for the place whereon thou standest [is] holy ground.
Contradiction with Acts 7:33
Similar to Exodus 3:5, this also repeats the notion of holy ground, mirroring rather than contradicting Joshua 5:15.
Acts 7:33: Then said the Lord to him, Put off thy shoes from thy feet: for the place where thou standest is holy ground.