diff --git a/src/lib/api.ts b/src/lib/api.ts
index e407107ed..71fe4e734 100644
--- a/src/lib/api.ts
+++ b/src/lib/api.ts
@@ -433,7 +433,11 @@ export async function getSpaceCustomization(spaceId: string): Promise<Customizat
             const parsed = rison.decode_object<Partial<CustomizationSettings>>(extend);
             return { ...raw, ...parsed };
         } catch (error) {
-            console.error('Failed to parse x-gitbook-customization header (ignored)', error);
+            console.error(
+                `Failed to parse x-gitbook-customization header (ignored): ${
+                    (error as Error).stack ?? (error as Error).message ?? error
+                }`,
+            );
         }
     }
 
diff --git a/src/lib/async.ts b/src/lib/async.ts
index f58ea547d..eefc98d76 100644
--- a/src/lib/async.ts
+++ b/src/lib/async.ts
@@ -208,7 +208,7 @@ function logIgnoredError(message: string, error: Error) {
         return;
     }
 
-    console.error(message, error);
+    console.error(`${message}: ${error.stack ?? error.message ?? error}`);
 }
 
 const UndefinedSymbol = Symbol('Undefined');
diff --git a/src/lib/images.ts b/src/lib/images.ts
index 2f65f0b18..6bf6ba7cd 100644
--- a/src/lib/images.ts
+++ b/src/lib/images.ts
@@ -108,7 +108,11 @@ export async function getImageSize(
             height: json.original.height,
         };
     } catch (error) {
-        console.error(`failed to fetch image size for ${input}`, error);
+        console.error(
+            `failed to fetch image size for ${input}: ${
+                (error as Error).stack ?? (error as Error).message ?? error
+            }`,
+        );
         return null;
     }
 }