[BUGFIX] Exception thrown in update wizard if file does not exists

When fetching a file that does not exists a exception is
thrown in the update wizard to update RTE file links to FAL.
The exception will now be catched.

Resolves: #53127
Releases: 6.2
Change-Id: I81a204506abfe2f462142ccc504f3a4e2cef138f
Reviewed-on: https://review.typo3.org/25004
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters

typo3/sysext/install/Classes/Updates/RteFileLinksUpdateWizard.php

@@ -204,7 +204,12 @@ class RteFileLinksUpdateWizard extends AbstractUpdate {
 	 */
 	protected function convertFileLinks(array $reference, array $record) {
 		// First of all, try to get the referenced file. Continue only if found.
-		$fileObject = $this->fetchReferencedFile($reference['ref_string'], $reference);
+		try {
+			$fileObject = $this->fetchReferencedFile($reference['ref_string'], $reference);
+		} catch (\InvalidArgumentException $exception) {
+			$fileObject = NULL;
+			$this->errors[] = $reference['ref_string'] . ' could not be replaced. File does not exist.';
+		}
 		if ($fileObject instanceof \TYPO3\CMS\Core\Resource\AbstractFile) {
 			// Next, match the reference path in the content to be sure it's present inside a <link> tag
 			$content = $record[$reference['field']];