Skip non-existing local chapters

app/src/main/kotlin/org/koitharu/kotatsu/local/data/input/LocalMangaParser.kt

@@ -67,14 +67,19 @@ class LocalMangaParser(private val uri: Uri) {
 				coverUrl = coverEntry?.let { uri.child(it, resolve = true).toString() }.orEmpty(),
 				largeCoverUrl = null,
 				chapters = if (withDetails) {
-					mangaInfo.chapters?.map { c ->
+					mangaInfo.chapters?.mapNotNull { c ->
+						val path = index.getChapterFileName(c.id)?.toPath()
+						if (path != null && !fileSystem.exists(rootPath / path)) {
+							null
+						} else {
 							c.copyInternal(
-							url = index.getChapterFileName(c.id)?.toPath()?.let {
+								url = path?.let {
 									uri.child(it, resolve = false).toString()
 								} ?: uri.toString(),
 								source = LocalMangaSource,
 							)
 						}
+					}
 				} else {
 					null
 				},