I had saw many people have a common issue with their android device that is Unable to connect to camera error and I also have faced this error but after searching and experimenting a while I got a permanent solution for it.
Requirement : An android device, ES File Explorer app, Camera App and the Main Error.
Steps :-
Step 1 : Open ES File Explorer.
Step 3 : Click on Apps option.
Step 4 : Now click on user apps at the top of the screen and choose system apps from the list.
Step 6 : Now click back and slide to internal SD card if have or external SD card section and find backups folder.
Step 7 : Now open the folder then apps and then you will find the Camera app. Just click on it and reinstall the app.
Step 8 : After that go to your Camera app info. You can find camera app info in setting>apps>all apps section. Search the app and click it and you will be in camera app info.
Step 9 : Now from App info, wipe app data and wipe app cache. Now click on disable and then it will ask for uninstall update, click yes and it will get disable.
Step 10 : Now again enable the app and click home and open the camera app. Now your camera app will open normally without any error.
Note : 1. If you found that your camera app is no longer available to open after uninstalling update and reenabling it. Then don't be afraid just reinstall the app from the ES file explorer.
2. If your camera app is now of older version just re install it from ES file explorer, backups folder.
I hope your problem will be fixed. For trouble shooting just comment below. I will help you ASAP.
