diff --git a/src/services/ffmpeg.ts b/src/services/ffmpeg.ts
index 104a47dcb..dfd24737a 100644
--- a/src/services/ffmpeg.ts
+++ b/src/services/ffmpeg.ts
@@ -5,6 +5,7 @@ import log from 'electron-log';
 import { readFile, rmSync, writeFile } from 'promise-fs';
 import { logErrorSentry } from './sentry';
 import { generateTempFilePath, getTempDirPath } from '../utils/temp';
+import { existsSync } from 'fs';
 
 const execAsync = util.promisify(require('child_process').exec);
 
@@ -39,13 +40,17 @@ export async function runFFmpegCmd(
         cmd = shellescape(cmd);
         log.info('cmd', cmd);
         await execAsync(cmd);
-        return new Uint8Array(await readFile(tempOutputFilePath));
+        if (!existsSync(tempOutputFilePath)) {
+            throw new Error('ffmpeg output file not found');
+        }
+        const outputFile = await readFile(tempOutputFilePath);
+        return new Uint8Array(outputFile);
     } catch (e) {
         logErrorSentry(e, 'ffmpeg run command error');
         throw e;
     } finally {
         try {
-            rmSync(tempOutputFilePath);
+            rmSync(tempOutputFilePath, { force: true });
         } catch (e) {
             logErrorSentry(e, 'failed to remove tempOutputFile');
         }
@@ -66,5 +71,5 @@ export async function deleteTempFile(tempFilePath: string) {
             'tried to delete a non temp file'
         );
     }
-    rmSync(tempFilePath);
+    rmSync(tempFilePath, { force: true });
 }
diff --git a/src/services/fs.ts b/src/services/fs.ts
index fa3abd56d..ba22e39ff 100644
--- a/src/services/fs.ts
+++ b/src/services/fs.ts
@@ -5,6 +5,7 @@ import { ElectronFile } from '../types';
 import StreamZip from 'node-stream-zip';
 import { Readable } from 'stream';
 import { logError } from './logging';
+import { existsSync } from 'fs';
 
 // https://stackoverflow.com/a/63111390
 export const getDirFilePaths = async (dirPath: string) => {
@@ -64,13 +65,22 @@ export async function getElectronFile(filePath: string): Promise<ElectronFile> {
         size: fileStats.size,
         lastModified: fileStats.mtime.valueOf(),
         stream: async () => {
+            if (!existsSync(filePath)) {
+                throw new Error('electronFile does not exist');
+            }
             return await getFileStream(filePath);
         },
         blob: async () => {
+            if (!existsSync(filePath)) {
+                throw new Error('electronFile does not exist');
+            }
             const blob = await fs.readFile(filePath);
             return new Blob([new Uint8Array(blob)]);
         },
         arrayBuffer: async () => {
+            if (!existsSync(filePath)) {
+                throw new Error('electronFile does not exist');
+            }
             const blob = await fs.readFile(filePath);
             return new Uint8Array(blob);
         },
@@ -207,5 +217,8 @@ export function writeStream(filePath: string, fileStream: any) {
 }
 
 export async function readTextFile(filePath: string) {
+    if (!existsSync(filePath)) {
+        throw new Error('File does not exist');
+    }
     return await fs.readFile(filePath, 'utf-8');
 }
diff --git a/src/services/heicConverter.ts b/src/services/heicConverter.ts
index c094cde06..e1af0a27f 100644
--- a/src/services/heicConverter.ts
+++ b/src/services/heicConverter.ts
@@ -1,7 +1,7 @@
 import util from 'util';
 import { exec } from 'child_process';
 
-import { rmSync } from 'fs';
+import { existsSync, rmSync } from 'fs';
 import { readFile, writeFile } from 'promise-fs';
 import { generateTempFilePath } from '../utils/temp';
 import { logErrorSentry } from './sentry';
@@ -30,6 +30,9 @@ export async function convertHEIC(
 
         await runConvertCommand(tempInputFilePath, tempOutputFilePath);
 
+        if (!existsSync(tempOutputFilePath)) {
+            throw new Error('heic convert output file not found');
+        }
         const convertedFileData = new Uint8Array(
             await readFile(tempOutputFilePath)
         );
@@ -39,12 +42,12 @@ export async function convertHEIC(
         throw e;
     } finally {
         try {
-            rmSync(tempInputFilePath);
+            rmSync(tempInputFilePath, { force: true });
         } catch (e) {
             logErrorSentry(e, 'failed to remove tempInputFile');
         }
         try {
-            rmSync(tempOutputFilePath);
+            rmSync(tempOutputFilePath, { force: true });
         } catch (e) {
             logErrorSentry(e, 'failed to remove tempOutputFile');
         }