Adding better error logs for ntfy client

src/ntfy/client.ts

@@ -41,7 +41,7 @@ export class NtfyClient {
 				throw new Error(`${response.status} - ${response.statusText}`)
 			}
 		} catch (error: unknown) {
-			this.loggerService.error('ntfy client failed', { error })
+			this.loggerService.error('ntfy client failed', { error: error instanceof Error ? error.message : JSON.stringify(error) })
 		}
 	}
 }