Correcting the error on TX CommunitiesSelfRegController

 If you receive a validation error for TX_CommunitiesSelfRegController: Variable does not exist: TX_FLSChk, required Apex Classes are missing. Follow the steps below to resolve this error:

Create the following Apex Classes in your sandbox and Deploy a Change Set  (create the classes in the following order), using the steps below: 

• TX_FLSChk
• TX_testTools
• TX_FLSChk_Test

1. Navigate to Setup and search for Apex Classes.
2. Click New.
3. Download TX_FLSChk and paste into the Apex Class.
4. Save your changes.
5. Repeat above steps for:

• TX_testTools
• TX_FLSChk_Test