diff --git a/src/cronjob/downvoteSegmentArchiveJob.ts b/src/cronjob/downvoteSegmentArchiveJob.ts
index 6fa4f71..74d72ac 100644
--- a/src/cronjob/downvoteSegmentArchiveJob.ts
+++ b/src/cronjob/downvoteSegmentArchiveJob.ts
@@ -29,7 +29,7 @@ export const archiveDownvoteSegment = async (dayLimit: number, voteLimit: number
 
     } catch (err) {
         Logger.error("Execption when insert segment in archivedSponsorTimes");
-        Logger.error(err);
+        Logger.error(err as string);
         return 1;
     }
 
@@ -47,7 +47,7 @@ export const archiveDownvoteSegment = async (dayLimit: number, voteLimit: number
 
     } catch (err) {
         Logger.error("Execption when deleting segment in sponsorTimes");
-        Logger.error(err);
+        Logger.error(err as string);
         return 1;
     }
 
diff --git a/src/routes/addUnlistedVideo.ts b/src/routes/addUnlistedVideo.ts
index 4926658..01a1749 100644
--- a/src/routes/addUnlistedVideo.ts
+++ b/src/routes/addUnlistedVideo.ts
@@ -23,7 +23,7 @@ export function addUnlistedVideo(req: Request, res: Response): Response {
         const timeSubmitted = Date.now();
         db.prepare("run", `INSERT INTO "unlistedVideos" ("videoID", "year", "views", "channelID", "timeSubmitted") values (?, ?, ?, ?, ?)`, [videoID, year, views, channelID, timeSubmitted]);
     } catch (err) {
-        Logger.error(err);
+        Logger.error(err as string);
         return res.sendStatus(500);
     }
 
diff --git a/src/routes/dumpDatabase.ts b/src/routes/dumpDatabase.ts
index f0669fd..8ebd82c 100644
--- a/src/routes/dumpDatabase.ts
+++ b/src/routes/dumpDatabase.ts
@@ -65,10 +65,8 @@ function removeOutdatedDumps(exportPath: string): Promise<void> {
 
         // read files in export directory
         fs.readdir(exportPath, async (err: any, files: string[]) => {
-            if (err) {
-                Logger.error(err);
-                return resolve();
-            }
+            if (err) Logger.error(err);
+            if (err) return resolve();
 
             files.forEach(file => {
                 // we only care about files that start with "<tablename>_" and ends with .csv
diff --git a/src/routes/getIsUserVIP.ts b/src/routes/getIsUserVIP.ts
index 050be2e..1363c2b 100644
--- a/src/routes/getIsUserVIP.ts
+++ b/src/routes/getIsUserVIP.ts
@@ -22,7 +22,7 @@ export async function getIsUserVIP(req: Request, res: Response): Promise<Respons
             vip: vipState,
         });
     } catch (err) {
-        Logger.error(err);
+        Logger.error(err as string);
         return res.sendStatus(500);
     }
 }
diff --git a/src/routes/getLockCategories.ts b/src/routes/getLockCategories.ts
index 74b1a0b..047c757 100644
--- a/src/routes/getLockCategories.ts
+++ b/src/routes/getLockCategories.ts
@@ -25,7 +25,7 @@ export async function getLockCategories(req: Request, res: Response): Promise<Re
             categories
         });
     } catch (err) {
-        Logger.error(err);
+        Logger.error(err as string);
         return res.sendStatus(500);
     }
 }
diff --git a/src/routes/getLockCategoriesByHash.ts b/src/routes/getLockCategoriesByHash.ts
index 22d5dde..4bedc73 100644
--- a/src/routes/getLockCategoriesByHash.ts
+++ b/src/routes/getLockCategoriesByHash.ts
@@ -54,7 +54,7 @@ export async function getLockCategoriesByHash(req: Request, res: Response): Prom
         // merge all locks
         return res.send(mergeLocks(lockedRows));
     } catch (err) {
-        Logger.error(err);
+        Logger.error(err as string);
         return res.sendStatus(500);
     }
 }
diff --git a/src/routes/getSkipSegments.ts b/src/routes/getSkipSegments.ts
index cffe290..99e8f50 100644
--- a/src/routes/getSkipSegments.ts
+++ b/src/routes/getSkipSegments.ts
@@ -80,7 +80,7 @@ async function getSegmentsByVideoID(req: Request, videoID: VideoID, categories:
         return segments;
     } catch (err) {
         if (err) {
-            Logger.error(err);
+            Logger.error(err as string);
             return null;
         }
     }
@@ -125,8 +125,10 @@ async function getSegmentsByHash(req: Request, hashedVideoIDPrefix: VideoIDHash,
 
         return segments;
     } catch (err) {
-        Logger.error(err);
-        return null;
+        if (err) {
+            Logger.error(err as string);
+            return null;
+        }
     }
 }
 
diff --git a/src/routes/getUsername.ts b/src/routes/getUsername.ts
index 823509a..8867e8f 100644
--- a/src/routes/getUsername.ts
+++ b/src/routes/getUsername.ts
@@ -28,7 +28,7 @@ export async function getUsername(req: Request, res: Response): Promise<Response
             });
         }
     } catch (err) {
-        Logger.error(err);
+        Logger.error(err as string);
         return res.sendStatus(500);
     }
 }
diff --git a/src/routes/getViewsForUser.ts b/src/routes/getViewsForUser.ts
index c129a3a..a7932ec 100644
--- a/src/routes/getViewsForUser.ts
+++ b/src/routes/getViewsForUser.ts
@@ -26,7 +26,7 @@ export async function getViewsForUser(req: Request, res: Response): Promise<Resp
             return res.sendStatus(404);
         }
     } catch (err) {
-        Logger.error(err);
+        Logger.error(err as string);
         return res.sendStatus(500);
     }
 }
diff --git a/src/routes/postLockCategories.ts b/src/routes/postLockCategories.ts
index 39ef1a8..fa53fb7 100644
--- a/src/routes/postLockCategories.ts
+++ b/src/routes/postLockCategories.ts
@@ -68,7 +68,7 @@ export async function postLockCategories(req: Request, res: Response): Promise<s
             await db.prepare("run", `INSERT INTO "lockCategories" ("videoID", "userID", "category", "hashedVideoID", "reason") VALUES(?, ?, ?, ?, ?)`, [videoID, userID, category, hashedVideoID, reason]);
         } catch (err) {
             Logger.error(`Error submitting 'lockCategories' marker for category '${category}' for video '${videoID}'`);
-            Logger.error(err);
+            Logger.error(err as string);
             res.status(500).json({
                 message: "Internal Server Error: Could not write marker to the database.",
             });
@@ -89,7 +89,7 @@ export async function postLockCategories(req: Request, res: Response): Promise<s
                     [reason, userID, videoID, category]);
             } catch (err) {
                 Logger.error(`Error submitting 'lockCategories' marker for category '${category}' for video '${videoID}'`);
-                Logger.error(err);
+                Logger.error(err as string);
                 res.status(500).json({
                     message: "Internal Server Error: Could not write marker to the database.",
                 });
diff --git a/src/routes/postPurgeAllSegments.ts b/src/routes/postPurgeAllSegments.ts
index aecaf5d..3785b6e 100644
--- a/src/routes/postPurgeAllSegments.ts
+++ b/src/routes/postPurgeAllSegments.ts
@@ -29,7 +29,7 @@ export async function postPurgeAllSegments(req: Request, res: Response): Promise
         await db.prepare("run", `UPDATE "sponsorTimes" SET "hidden" = 1 WHERE "videoID" = ?`, [videoID]);
 
     } catch (err) {
-        Logger.error(err);
+        Logger.error(err as string);
         return res.sendStatus(500);
     }
     return res.sendStatus(200);
diff --git a/src/routes/postSegmentShift.ts b/src/routes/postSegmentShift.ts
index 3abbd25..84eb268 100644
--- a/src/routes/postSegmentShift.ts
+++ b/src/routes/postSegmentShift.ts
@@ -92,7 +92,7 @@ export async function postSegmentShift(req: Request, res: Response): Promise<Res
             }
         }
     } catch (err) {
-        Logger.error(err);
+        Logger.error(err as string);
         return res.sendStatus(500);
     }
 
diff --git a/src/routes/postSkipSegments.ts b/src/routes/postSkipSegments.ts
index c18e38b..2609c27 100644
--- a/src/routes/postSkipSegments.ts
+++ b/src/routes/postSkipSegments.ts
@@ -679,7 +679,7 @@ export async function postSkipSegments(req: Request, res: Response): Promise<Res
             });
         }
     } catch (err) {
-        Logger.error(err);
+        Logger.error(err as string);
         return res.sendStatus(500);
     }
 
diff --git a/src/routes/setUsername.ts b/src/routes/setUsername.ts
index f81cdfc..a3966d5 100644
--- a/src/routes/setUsername.ts
+++ b/src/routes/setUsername.ts
@@ -80,7 +80,7 @@ export async function setUsername(req: Request, res: Response): Promise<Response
 
         return res.sendStatus(200);
     } catch (err) {
-        Logger.error(err);
+        Logger.error(err as string);
         return res.sendStatus(500);
     }
 }
diff --git a/src/routes/voteOnSponsorTime.ts b/src/routes/voteOnSponsorTime.ts
index 02e8fbe..8235364 100644
--- a/src/routes/voteOnSponsorTime.ts
+++ b/src/routes/voteOnSponsorTime.ts
@@ -458,7 +458,7 @@ export async function voteOnSponsorTime(req: Request, res: Response): Promise<Re
         }
         return res.status(finalResponse.finalStatus).send(finalResponse.finalMessage ?? undefined);
     } catch (err) {
-        Logger.error(err);
+        Logger.error(err as string);
         return res.status(500).json({error: "Internal error creating segment vote"});
     }
 }
\ No newline at end of file
diff --git a/src/utils/logger.ts b/src/utils/logger.ts
index 7f02f82..159ec97 100644
--- a/src/utils/logger.ts
+++ b/src/utils/logger.ts
@@ -53,20 +53,20 @@ class Logger {
         }
     }
 
-    error(str: string | Error) {
+    error(str: string) {
         this.log(LogLevel.ERROR, str);
     }
-    warn(str: string | Error) {
+    warn(str: string) {
         this.log(LogLevel.WARN, str);
     }
-    info(str: string | Error) {
+    info(str: string) {
         this.log(LogLevel.INFO, str);
     }
-    debug(str: string | Error) {
+    debug(str: string) {
         this.log(LogLevel.DEBUG, str);
     }
 
-    private log(level: LogLevel, str: string | Error) {
+    private log(level: LogLevel, str: string) {
         if (!this._settings[level]) {
             return;
         }
diff --git a/src/utils/youtubeApi.ts b/src/utils/youtubeApi.ts
index 6298702..96dd669 100644
--- a/src/utils/youtubeApi.ts
+++ b/src/utils/youtubeApi.ts
@@ -20,7 +20,7 @@ export class YouTubeAPI {
                     return { err: null, data: JSON.parse(data) };
                 }
             } catch (err) {
-                return { err, data: null };
+                return { err: err as string | boolean, data: null };
             }
         }
 
@@ -45,7 +45,7 @@ export class YouTubeAPI {
                 return { err: result.statusText, data: null };
             }
         } catch (err) {
-            return {err, data: null};
+            return {err: err as string | boolean, data: null};
         }
     }
 }