Same answer as before.
So more bollocks then, ever considered a career in politics?
The Commando Supremo link you post does not identify a lack of minefields - the commentary is opposite to this btw debunking claims of attack by Italian ASW forces in favour of loss on an identified minefield.
The research on Navy History net is from the Naval Historical branch complied in the 1980s subsequently corrected by the Submarine Museum. So the guys have post war access to British German and Italian and survey records. as opposed to you making a claim on the basis of nothing in particular. If anything sub losses to mines are undercounted. Navies tend to attribute cause unknown to direct enemy action so will tend to attribute the loss to enemy reports of having attacked a submarine on or about the date the sub was lost in the general area of where the sub should have been. So HMS Urge was reported for a long time to have been sunk by Pegaso on 28 April 42 except
Pegaso was in Taranto harbour at the time.
The wreck of HMS Urge was located in 2019 off Valletta (Malta). She was victim of a mine of the MT 13 minefield laid by the 3rd Schnellbooteflottille on the night of 19/20 April 1942. HMS Urge was lost shortly after she sailed on 27 April 1942.
The details of sub losses everywhere are speculative unless and until the wreck is found and examined or unless there survivors which in the case of mining is borderline impossible. For you to claim the cause of the loss is due to mechanical or design failure requires you to have a reference to survey of the boat in question or a description from a survivor identifying the cause of the loss.