failure in json response in codeigniter 3 controller method

It seems you're encountering an issue where form validation errors are logged but not returned as JSON responses in your CodeIgniter controller. try these few steps to troubleshoot

1. Check for Prior Output - Ensure no output (like whitespace or HTML) is sent before the JSON response. Any prior output can prevent the JSON from being sent correctly.

2. Set Content Type and Output Correctly - Use CodeIgniter's output class to set the content type and output the JSON response:

Code:

php
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$this->output
    ->set_content_type('application/json')
    ->set_output(json_encode($response));

3. Use exit After Outputting JSON - After sending the JSON response, call exit; to prevent further script execution:

Code:

php
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Edit
$this->output
    ->set_content_type('application/json')
    ->set_output(json_encode($response));
exit;

4. Inspect Network Response - Use browser developer tools to inspect the network response and ensure the JSON is being sent as expected.

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