Recently I've noticed that I've been getting the same error upon installation for several Xposed modules. I have been rooted for about 3 months. My firmware is supported for many of them, currently running N/7.0 on my LG Stylo 3 Plus, stock rom. Upon installation for lets say Flat Style Coloured Bars or Indicators, I get an error saying that the app was not installed, the package appears to be corrupt (Photo attached below). Is there any work around this? Would really appreciate any help, thanks!