Error Message : import ..., symbol: variable ...,location: class..

⚠️ Error: import ... , symbol: variable ..., location: class ...

📌 Causes

This error appears when the compilation process cannot find the class or library required by the workflow.

Usually occurs because: Example error message: 
    import com.example.library....
    symbol: variable ....
    location: class ....
Meaning:
➡️ The compiler did not find the imported class.

🧩 Types of Error Causes

1. External Library Missing

If the class comes from an external library , then:

📁 Copy file .jar library to a sub-folder of the folder: 
libApp
After that:

2. HGrid247 Internal Library is Not Active Yet

If the library comes from the HGrid247 built-in module:

Activate via menu: 
    File → Additional Library


Then:

🔎 How to Check Required Libraries

Usually the error will show the package name, for example: 
    import grok....
Means need to activate: 
    grok library
Another example: 
    import jdbc....
Enable: 
    jdbc library

🔧 Repair Steps (Safe Order)

  1. View compile error message
  2. Identify the library name
  3. Determine whether:
    • external library
    • library internal HGrid247
  4. If external → copy .jar to sub-folder of the folder libApp
  5. If internal → enable in Additional Library
  6. Recompile workflow