Why is the camera not working err is displayed but tried one solution

So the display shows Err and the shutter works

I made a post already and a common answer was that a rivet in the aperture control module breaks but I looked and there is no broken pin in the module

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0