TCPDF ERROR: [Image] Unable to get image

This error message is typically associated with the TCPDF library, which is a PHP class for generating PDF files. It suggests that the library is unable to retrieve an image file that is being referenced in the code.

There are a few potential causes for this error:

• The file path for the image may be incorrect (e.g., using a relative path when an absolute path is required).
• The image file may be missing or corrupt.
• The server may not have permission to access the image file.
• The file format of the image may not be supported by the TCPDF library (TCPDF natively supports JPEG, PNG, GIF, BMP, WBMP, and SVG).

To resolve this issue, follow these actionable steps:

1. Verify the image path. TCPDF often requires absolute paths. Use realpath() to resolve relative paths safely:

   $imagePath = realpath(__DIR__ . '/assets/logo.png');
   if ($imagePath && file_exists($imagePath)) {
       $pdf->Image($imagePath, 10, 10, 50, 50, 'PNG');
   }

2. Check file existence and integrity. Open the image directly in a browser or image viewer to confirm it loads correctly and isn't corrupted.
3. Verify server permissions. Ensure the web server user has read access to the image file (typically 644 for files and 755 for directories).
4. Confirm supported formats. TCPDF does not support WebP or HEIC natively. Convert unsupported formats to JPEG or PNG before embedding.