I had the same issue. My phone is a Sony Xperia XA1+, android 8.0. At start, I had no idea which app caused it, so I had to do a factory reset (which is a huge pain in the a**, due to banking apps). When the apps were being automatically reinstalled, the phone got locked on bootload again. Then I had to install them one by one to find the cause. Do you guys confirm it’s already working?