Blocker - Facing error - Uncaught Error: Language "Python" does not know how to generate code for block type

[Naresh Chaudhari]

Hi All, Getting below error while dragging any block from the testcase category. Other category blocks is working as expected. (Did this POC work before 5 months, and yesterday I opened the application started facing this issue so, started debugging but not got a solution, So please anyone help me out here)
generator.js:197 Uncaught Error: Language "Python" does not know how to generate  code for block type "<custom_raise_exception(block_name)>".
    at Blockly.Generator.blockToCode (generator.js:197)
    at Blockly.Generator.workspaceToCode (generator.js:104)
    at showCode ((index):1701)
    at Blockly.WorkspaceSvg.Blockly.Workspace.fireChangeListener (workspace.js:665)
    at Blockly.Events.fireNow_ (events.js:247)



Please help me out... 

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[Naresh Chaudhari]

Here is implementation code
```

Blockly.Python['custom_raise_exception'] = function (block) {

    var text_exception_message = block.getFieldValue('EXCEPTION_MESSAGE');

   

    var code = 'raise Exception("' + text_exception_message + '")\n';

    return code;

};

Blockly.Blocks['custom_raise_exception'] = {

  init: function() {

    this.appendDummyInput()

        .appendField("raise exception")

        .appendField(new Blockly.FieldTextInput("default"), "EXCEPTION_MESSAGE");

    this.setInputsInline(false);

    this.setPreviousStatement(true, null);

    this.setNextStatement(true, null);

    this.setColour("%{BKY_TESTCASE_HUE}");

 this.setTooltip("");

 this.setHelpUrl("");

  }

};

    '<block type="custom_raise_exception"></block>' +

```

[Neil Fraser]

This code looks exactly correct.  My guess is that somehow the code isn't getting loaded.

On the console, type:

  Blockly.Blocks.custom_raise_exception

You should see a function be printed.  Next type:

  Blockly.Python.custom_raise_exception

Again, a function should be printed, but I assume that it will report 'undefined' instead.  If that is the case, then you need to figure out why your code isn't loading.  Let us know what you find and we'll help as we can.

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Neil Fraser
https://neil.fraser.name