Prevent random FileNotFoundException when reading chapters (#3154)

Co-authored-by: AntsyLich <59261191+AntsyLich@users.noreply.github.com>

CHANGELOG.md

@@ -27,6 +27,7 @@ The format is a modified version of [Keep a Changelog](https://keepachangelog.co
 ### Fixed
 - Add missing `outlineVariant` color to Nord theme ([@CompileConnected](https://github.com/CompileConnected)) ([#3184](https://github.com/mihonapp/mihon/pull/3184))
 - Continue reading button missing when unread filter is off ([@AntsyLich](https://github.com/AntsyLich)) ([#3382](https://github.com/mihonapp/mihon/pull/3382))
+- Fix random `FileNotFoundException` when reading chapters ([@leodyversemilla07](https://github.com/leodyversemilla07)) ([#3154](https://github.com/mihonapp/mihon/pull/3154))
 
 ## [v0.19.9] - 2026-04-11
 ### Fixed

app/src/main/java/eu/kanade/tachiyomi/data/cache/ChapterCache.kt

@@ -113,7 +113,13 @@ class ChapterCache(
      */
     fun isImageInCache(imageUrl: String): Boolean {
         return try {
-            diskCache.get(DiskUtil.hashKeyForDisk(imageUrl)).use { it != null }
+            val key = DiskUtil.hashKeyForDisk(imageUrl)
+            val inJournal = diskCache.get(key).use { it != null }
+            val fileExists = getImageFile(imageUrl).exists()
+            if (inJournal && !fileExists) {
+                logcat(LogPriority.WARN) { "Image is in journal but file is missing: $imageUrl" }
+            }
+            inJournal && fileExists
         } catch (_: IOException) {
             false
         }