diff --git a/src/APL/saleor-cloud-apl.ts b/src/APL/saleor-cloud-apl.ts
index e2192aa..6a3c479 100644
--- a/src/APL/saleor-cloud-apl.ts
+++ b/src/APL/saleor-cloud-apl.ts
@@ -1,3 +1,4 @@
+import { hasProp } from "../has-prop";
 import { APL, AplConfiguredResult, AplReadyResult, AuthData } from "./apl";
 import { createAPLDebug } from "./apl-debug";
 import { authDataFromObject } from "./auth-data-from-object";
@@ -12,11 +13,13 @@ export type SaleorCloudAPLConfig = {
 const validateResponseStatus = (response: Response) => {
   if (response.status === 404) {
     debug("Auth data not found");
+    debug("%O", response);
 
     throw new Error("Auth data not found");
   }
   if (!response.ok) {
     debug("Response failed with status %s", response.status);
+    debug("%O", response);
 
     throw new Error(`Fetch returned with non 200 status code ${response.status}`);
   }
@@ -39,6 +42,18 @@ const mapAPIResponseToAuthData = (response: any): AuthData => ({
   token: response.token,
 });
 
+const extractErrorMessage = (error: unknown) => {
+  if (typeof error === "string") {
+    return error;
+  }
+
+  if (hasProp(error, "message")) {
+    return error.message;
+  }
+
+  return "Unknown error";
+};
+
 /**
  *
  * Saleor Cloud APL - handle auth data management via REST API.
@@ -72,7 +87,9 @@ export class SaleorCloudAPL implements APL {
       method: "GET",
       headers: { "Content-Type": "application/json", ...this.headers },
     }).catch((error) => {
-      debug("Failed to reach API call:  %s", error?.message ?? "Unknown error");
+      debug("Failed to reach API call:  %s", extractErrorMessage(error));
+      debug("%O", error);
+
       return undefined;
     });
 
@@ -83,13 +100,15 @@ export class SaleorCloudAPL implements APL {
 
     try {
       validateResponseStatus(response);
+      debug("Response status valid");
     } catch {
       debug("Response status not valid");
       return undefined;
     }
 
     const parsedResponse = (await response.json().catch((e) => {
-      debug("Failed to parse response: %s", e?.message ?? "Unknown error");
+      debug("Failed to parse response: %s", extractErrorMessage(e));
+      debug("%O", e);
     })) as unknown;
 
     const authData = authDataFromObject(mapAPIResponseToAuthData(parsedResponse));
@@ -103,21 +122,22 @@ export class SaleorCloudAPL implements APL {
   }
 
   async set(authData: AuthData) {
-    debug("Saving data to SaleorCloudAPL for domain: %s", authData.domain);
+    debug("Saving data to SaleorCloudAPL for saleorApiUrl: %s", authData.saleorApiUrl);
 
     const response = await fetch(this.resourceUrl, {
       method: "POST",
       headers: { "Content-Type": "application/json", ...this.headers },
       body: JSON.stringify(mapAuthDataToAPIBody(authData)),
     }).catch((e) => {
-      debug("Failed to reach API call:  %s", e?.message ?? "Unknown error");
+      debug("Failed to reach API call:  %s", extractErrorMessage(e));
+      debug("%O", e);
 
-      throw new Error(`Error during saving the data: ${e}`);
+      throw new Error(`Error during saving the data: ${extractErrorMessage(e)}`);
     });
 
     validateResponseStatus(response);
 
-    debug("Set command finished successfully for domain: %", authData.domain);
+    debug("Set command finished successfully for saleorApiUrl: %", authData.saleorApiUrl);
 
     return undefined;
   }
@@ -133,9 +153,12 @@ export class SaleorCloudAPL implements APL {
 
       debug(`Delete responded with ${response.status} code`);
     } catch (error) {
-      debug("Error during deleting the data: %s", error);
+      const errorMessage = extractErrorMessage(error);
 
-      throw new Error(`Error during deleting the data: ${error}`);
+      debug("Error during deleting the data: %s", errorMessage);
+      debug("%O", error);
+
+      throw new Error(`Error during deleting the data: ${errorMessage}`);
     }
   }
 
@@ -152,7 +175,10 @@ export class SaleorCloudAPL implements APL {
 
       return ((await response.json()) as AuthData[]) || [];
     } catch (error) {
-      debug("Error during getting all the data:", error);
+      const errorMessage = extractErrorMessage(error);
+
+      debug("Error during getting all the data:", errorMessage);
+      debug("%O", error);
     }
 
     return [];