Photos are not getting saved topic

This problem started after 2 weeks of purchasing the device.
The photos taken by the camera were not being saved in the sd card. After restarting the phone it worked fine but the problem occurs still after every few days and sometimes few minutes 😞
I cannot download photos or videos from whatsapp and even see stickers on hike during this problem.

I also noticed an interesting thing... I had some apps saved in the sd card and when i faced problems as mentioned , i tried to open "app settings" and everytime it would "unfortunately stop working" .... Later after restarting the phone when everything was fine, i moved those apps to phone, and when the problem occured again i tried to open "app settings" and now it opened and functioned properly every time .

Also one time the music was not playing . it said " not found on the device".
I can't make head or tail of this business... If anyone knows what is happening then please tell me...
Please tell me if u have faced this problem too and how did u manage to solve this ???
PLEASE HELP A FRIEND HERE 😞

P.S. - I have not tried a different sd card because i dont know what is causing this problem.

Returning Back to Stock With Previously Saved Backup topic

Hi Guys,

Im in a spot of bother and am hoping for some advice. I have an HTC One m7 and about two weeks ago its wifi started acting up where it would get stuck on turning on and not work. I searched this problem up and most people who had it ended up sending their phone in for warranty repair. I figured that i would try a custom rom and see if that fixed my problem. So i unlocked my bootloader, rooted and flashed a custom rom. The problem went away for a bit but now its back, so I want to revert back to completely stock so that i can send it under warranty claim.
Problem is that I cant find an RUU file for my phone(CID GLOBA001); network provider is WIND (operated by Globalive). However I did make a backup of my stock ROM using TWRP before flashing the custom one. So if i restore that backup, all i have to do is get stock recovery&lock bootloader and I should be good for sending it under warranty? Or will I have to separately get other stuff back to stock such as kernel. P.S my phone is S-On
I Just want to make sure before doing anything because I am pretty new to this stuff.
Any help would be greatly appreciated :D