If the memory card was encrypted on the Huawei smartphone to protect the existing data, it must also be decrypted by this device in order to use it on other tablets, smartphones or laptops.

Android 10 | EMUI 10.0
Step 1:  Open the  Settings
Step 2:  Tap on  Security
Step 3:  Tap on  More settings
Step 4:  Tap on  Encryption and credentials
Step 5:  Tap on  Decrypt memory card
Step 6:  Confirm with  Decrypt memory card
  1. Open the Settings
  2. Tap on Security
  3. Tap on More settings
  4. Tap on Encryption and credentials
  5. Tap on Decrypt memory card
  6. Confirm with Decrypt memory card

Huawei Instructions