diff --git a/src/backend/middlewares/MetaFileMWs.ts b/src/backend/middlewares/MetaFileMWs.ts
index 3321fd0e..d06f4992 100644
--- a/src/backend/middlewares/MetaFileMWs.ts
+++ b/src/backend/middlewares/MetaFileMWs.ts
@@ -1,7 +1,8 @@
 import {NextFunction, Request, Response} from 'express';
 import * as fs from 'fs';
-import { Config } from '../../common/config/private/Config';
-import { GPXProcessing } from '../model/fileprocessing/GPXProcessing';
+import {Config} from '../../common/config/private/Config';
+import {GPXProcessing} from '../model/fileprocessing/GPXProcessing';
+import {ErrorCodes, ErrorDTO} from '../../common/entities/Error';
 
 export class MetaFileMWs {
   public static async compressGPX(
@@ -17,22 +18,31 @@ export class MetaFileMWs {
       return res.redirect(req.originalUrl.slice(0, -1 * '\\bestFit'.length));
     }
     const fullPath = req.resultPipe as string;
+    try {
+      const compressedGPX = GPXProcessing.generateConvertedPath(
+        fullPath,
+      );
 
-    const compressedGPX = GPXProcessing.generateConvertedPath(
-      fullPath,
-    );
+      // check if converted photo exist
+      if (fs.existsSync(compressedGPX) === true) {
+        req.resultPipe = compressedGPX;
+        return next();
+      }
 
-    // check if converted photo exist
-    if (fs.existsSync(compressedGPX) === true) {
-      req.resultPipe = compressedGPX;
-      return next();
+      if (Config.MetaFile.GPXCompressing.onTheFly === true) {
+        req.resultPipe = await GPXProcessing.compressGPX(fullPath);
+        return next();
+      }
+    } catch (err) {
+
+      return next(
+        new ErrorDTO(
+          ErrorCodes.METAFILE_ERROR,
+          'Error during compressingGPX: ' + fullPath,
+          err
+        )
+      );
     }
-
-    if (Config.MetaFile.GPXCompressing.onTheFly === true) {
-      req.resultPipe = await GPXProcessing.compressGPX(fullPath);
-      return next();
-    }
-
     // not converted and won't be now
     return res.redirect(req.originalUrl.slice(0, -1 * '\\bestFit'.length));
   }
diff --git a/src/backend/model/fileprocessing/GPXProcessing.ts b/src/backend/model/fileprocessing/GPXProcessing.ts
index 6b050dfa..49b71179 100644
--- a/src/backend/model/fileprocessing/GPXProcessing.ts
+++ b/src/backend/model/fileprocessing/GPXProcessing.ts
@@ -82,48 +82,49 @@ export class GPXProcessing {
     await fsp.mkdir(outDir, {recursive: true});
     const gpxStr = await fsp.readFile(filePath);
     const gpxObj = await (new xml2js.Parser()).parseStringPromise(gpxStr);
-    const items: gpxEntry[] = gpxObj.gpx.trk[0].trkseg[0].trkpt;
+    const items: gpxEntry[] = gpxObj.gpx?.trk?.[0]?.trkseg[0]?.trkpt;
 
-    const distance = (entry1: gpxEntry, entry2: gpxEntry) => {
-      const lat1 = parseFloat(entry1.$.lat);
-      const lon1 = parseFloat(entry1.$.lon);
-      const lat2 = parseFloat(entry2.$.lat);
-      const lon2 = parseFloat(entry2.$.lon);
+    if (items) { // only compress paths
+      const distance = (entry1: gpxEntry, entry2: gpxEntry) => {
+        const lat1 = parseFloat(entry1.$.lat);
+        const lon1 = parseFloat(entry1.$.lon);
+        const lat2 = parseFloat(entry2.$.lat);
+        const lon2 = parseFloat(entry2.$.lon);
 
-      // credits to: https://www.movable-type.co.uk/scripts/latlong.html
-      const R = 6371e3; // metres
-      const φ1 = lat1 * Math.PI / 180; // φ, λ in radians
-      const φ2 = lat2 * Math.PI / 180;
-      const Δφ = (lat2 - lat1) * Math.PI / 180;
-      const Δλ = (lon2 - lon1) * Math.PI / 180;
+        // credits to: https://www.movable-type.co.uk/scripts/latlong.html
+        const R = 6371e3; // metres
+        const φ1 = lat1 * Math.PI / 180; // φ, λ in radians
+        const φ2 = lat2 * Math.PI / 180;
+        const Δφ = (lat2 - lat1) * Math.PI / 180;
+        const Δλ = (lon2 - lon1) * Math.PI / 180;
 
-      const a = Math.sin(Δφ / 2) * Math.sin(Δφ / 2) +
-        Math.cos(φ1) * Math.cos(φ2) *
-        Math.sin(Δλ / 2) * Math.sin(Δλ / 2);
-      const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+        const a = Math.sin(Δφ / 2) * Math.sin(Δφ / 2) +
+          Math.cos(φ1) * Math.cos(φ2) *
+          Math.sin(Δλ / 2) * Math.sin(Δλ / 2);
+        const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
 
-      const d = R * c; // in metres
-      return d;
-    };
-    const gpxEntryFilter = (value: gpxEntry, i: number, list: gpxEntry[]) => {
-      if (i === 0 || i >= list.length - 1) { // always keep the first and last items
-        return true;
-      }
-      const timeDelta = (Date.parse(list[i].time[0]) - Date.parse(list[i - 1].time[0])); // mill sec.
-      const dist = distance(list[i - 1], list[i]); // meters
+        const d = R * c; // in metres
+        return d;
+      };
+      const gpxEntryFilter = (value: gpxEntry, i: number, list: gpxEntry[]) => {
+        if (i === 0 || i >= list.length - 1) { // always keep the first and last items
+          return true;
+        }
+        const timeDelta = (Date.parse(list[i].time[0]) - Date.parse(list[i - 1].time[0])); // mill sec.
+        const dist = distance(list[i - 1], list[i]); // meters
 
-      return !(timeDelta < Config.MetaFile.GPXCompressing.minTimeDistance &&
-        dist < Config.MetaFile.GPXCompressing.minDistance);
-    };
-
-    gpxObj.gpx.trk[0].trkseg[0].trkpt = items.filter(gpxEntryFilter).map((v) => {
-      v.$.lon = parseFloat(v.$.lon).toFixed(6);
-      v.$.lat = parseFloat(v.$.lat).toFixed(6);
-      delete v.ele;
-      delete v.extensions;
-      return v;
-    });
+        return !(timeDelta < Config.MetaFile.GPXCompressing.minTimeDistance &&
+          dist < Config.MetaFile.GPXCompressing.minDistance);
+      };
 
+      gpxObj.gpx.trk[0].trkseg[0].trkpt = items.filter(gpxEntryFilter).map((v) => {
+        v.$.lon = parseFloat(v.$.lon).toFixed(6);
+        v.$.lat = parseFloat(v.$.lat).toFixed(6);
+        delete v.ele;
+        delete v.extensions;
+        return v;
+      });
+    }
     await fsp.writeFile(outPath, (new xml2js.Builder({renderOpts: {pretty: false}})).buildObject(gpxObj));
 
     return outPath;
diff --git a/src/common/entities/Error.ts b/src/common/entities/Error.ts
index 8b98ed3d..c8b9b00a 100644
--- a/src/common/entities/Error.ts
+++ b/src/common/entities/Error.ts
@@ -7,24 +7,25 @@ export enum ErrorCodes {
   PERMISSION_DENIED = 4,
   CREDENTIAL_NOT_FOUND = 5,
 
-  USER_CREATION_ERROR = 6,
+  USER_CREATION_ERROR = 20,
 
-  GENERAL_ERROR = 7,
-  THUMBNAIL_GENERATION_ERROR = 8,
-  PHOTO_GENERATION_ERROR = 9,
-  PERSON_ERROR = 10,
-  SERVER_ERROR = 11,
+  GENERAL_ERROR = 31,
+  THUMBNAIL_GENERATION_ERROR = 32,
+  PHOTO_GENERATION_ERROR = 33,
+  PERSON_ERROR = 34,
+  METAFILE_ERROR = 35,
+  SERVER_ERROR = 36,
 
-  USER_MANAGEMENT_DISABLED = 12,
+  USER_MANAGEMENT_DISABLED = 40,
 
-  INPUT_ERROR = 13,
+  INPUT_ERROR = 50,
 
-  SETTINGS_ERROR = 14,
-  TASK_ERROR = 15,
-  JOB_ERROR = 16,
-  LocationLookUp_ERROR = 17,
+  SETTINGS_ERROR = 60,
+  TASK_ERROR = 61,
+  JOB_ERROR = 62,
+  LocationLookUp_ERROR = 63,
 
-  ALBUM_ERROR = 18,
+  ALBUM_ERROR = 70,
 }
 
 export class ErrorDTO {