Hello, Zuzana,
I can’t interpret what you’re saying about ‘disabling Camera priors fixed the problem’.
I see the ‘prior’ menu for the cameras, but the options are ‘unknown’, ‘approximate’ and ‘fixed’ – setting all cameras to each of them in turn still results in the same result – a black texture. I disabled the ‘P_20170917_162258_vHDR_On.jpg’ camera with the red check in the ‘Camera poses’ list.
Could you please describe the steps and/or post the working project file for the project I uploaded?