I lost almost lot of files i stored its new pendrive i don’t know why it says this error i bought this from amazon if it works like this i won’t buy this product again
one is 64gb sandisk cruzer blade
(TAD-SDCZ50, SDCZ50-064G, BN191157705W MADE IN MALAYSIA)
second one is 32gb sandisk cruzer blade
(TAD-SDCZ50, SDCZ50-032G, BN190726778W MADE IN MALAYSIA)
Try them with another pc. If that works, copy all your files off of them.
To have it happen to one drive it could be a glitch, to have it happen to two different drives implies to me that you may be having problems with heat, low voltage, an OS glitch.