refactor: improve error messages

.gitignore

@@ -76,3 +76,6 @@ node_modules/
 !.yarn/releases
 !.yarn/sdks
 !.yarn/versions
+
+# exclude webstorm profile file
+.idea/

src/ledger-keyring.test.ts

@@ -330,6 +330,14 @@ describe('LedgerKeyring', function () {
         expect(keyring.hdk.publicKey).not.toBe('ABC');
       });
 
+      it('throws an error when the bridge getPublicKey method throws an error and it is not an error type', async function () {
+        keyring.setHdPath(`m/44'/60'/0'/0`);
+        jest.spyOn(bridge, 'getPublicKey').mockRejectedValue('Some error');
+        await expect(keyring.unlock()).rejects.toThrow(
+          'Ledger Ethereum app closed. Open it to unlock.',
+        );
+      });
+
       it('does not update hdk.publicKey if updateHdk is false', async function () {
         // @ts-expect-error we want to bypass the publicKey property set method
         keyring.hdk = { publicKey: 'ABC' };
@@ -366,12 +374,6 @@ describe('LedgerKeyring', function () {
           .mockRejectedValue(new Error('Some error'));
         await expect(keyring.unlock()).rejects.toThrow('Some error');
       });
-
-      it('throws an error when the bridge getPublicKey method throws an error and it is not an error type', async function () {
-        keyring.setHdPath(`m/44'/60'/0'/0`);
-        jest.spyOn(bridge, 'getPublicKey').mockRejectedValue('Some error');
-        await expect(keyring.unlock()).rejects.toThrow('Unknown error');
-      });
     });
 
     describe('addAccounts', function () {

src/ledger-keyring.ts

@@ -213,7 +213,9 @@ export class LedgerKeyring extends EventEmitter {
         hdPath: path,
       });
     } catch (error) {
-      throw error instanceof Error ? error : new Error('Unknown error');
+      throw error instanceof Error
+        ? error
+        : new Error('Ledger Ethereum app closed. Open it to unlock.');
     }
 
     if (updateHdk && payload.chainCode) {