Thanks for your support.
I have followed your steps. The error now is different.
(1/1) RuntimeException
Class '\Omnipay\Custom3\Gateway' not found
in GatewayFactory.php (line 105)
at GatewayFactory->create('\\Omnipay\\Custom3\\Gateway')
at call_user_func_array(array(object(GatewayFactory), 'create'), array('Custom3'))
in Omnipay.php (line 115)
at Omnipay::__callStatic('create', array('Custom3'))
in Gateway.php (line 217)
at Gateway->getFields()
in AccountGatewayController.php (line 138)
at AccountGatewayController->getViewModel()
in AccountGatewayController.php (line 95)
at AccountGatewayController->create()
at call_user_func_array(array(object(AccountGatewayController), 'create'), array())
in Controller.php (line 54)
at Controller->callAction('create', array())
in ControllerDispatcher.php (line 45)
at ControllerDispatcher->dispatch(object(Route), object(AccountGatewayController), 'create')
in Route.php (line 212)
at Route->runController()
in Route.php (line 169)
at Route->run()
in Router.php (line 658)
at Router->Illuminate\Routing\{closure}(object(Request))
in Pipeline.php (line 30)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in PermissionsRequired.php (line 53)
at PermissionsRequired->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in Authenticate.php (line 122)
at Authenticate->handle(object(Request), object(Closure), 'user')
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in DatabaseLookup.php (line 21)
at DatabaseLookup->handle(object(Request), object(Closure), 'user')
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in StartupCheck.php (line 241)
at StartupCheck->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in QueryLogging.php (line 32)
at QueryLogging->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in DuplicateSubmissionCheck.php (line 41)
at DuplicateSubmissionCheck->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in TransformsRequest.php (line 30)
at TransformsRequest->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in VerifyCsrfToken.php (line 68)
at VerifyCsrfToken->handle(object(Request), object(Closure))
in VerifyCsrfToken.php (line 44)
at VerifyCsrfToken->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in ShareErrorsFromSession.php (line 49)
at ShareErrorsFromSession->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in StartSession.php (line 63)
at StartSession->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in AddQueuedCookiesToResponse.php (line 37)
at AddQueuedCookiesToResponse->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in EncryptCookies.php (line 66)
at EncryptCookies->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in Pipeline.php (line 102)
at Pipeline->then(object(Closure))
in Router.php (line 660)
at Router->runRouteWithinStack(object(Route), object(Request))
in Router.php (line 635)
at Router->runRoute(object(Request), object(Route))
in Router.php (line 601)
at Router->dispatchToRoute(object(Request))
in Router.php (line 590)
at Router->dispatch(object(Request))
in Kernel.php (line 176)
at Kernel->Illuminate\Foundation\Http\{closure}(object(Request))
in Pipeline.php (line 30)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in InjectDebugbar.php (line 51)
at InjectDebugbar->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in CheckForMaintenanceMode.php (line 46)
at CheckForMaintenanceMode->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in HandlePreflight.php (line 46)
at HandlePreflight->handle(object(Request), object(Closure))
in Pipeline.php (line 149)
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
in Pipeline.php (line 53)
at Pipeline->Illuminate\Routing\{closure}(object(Request))
in Pipeline.php (line 102)
at Pipeline->then(object(Closure))
in Kernel.php (line 151)
at Kernel->sendRequestThroughRouter(object(Request))
in Kernel.php (line 116)
at Kernel->handle(object(Request))
in index.php (line 51)
I put the contents of the tables referred to payments:
gateways
2018-02-21 17:58:00 2018-02-21 17:58:00 Authorize.Net AIM AuthorizeNet_AIM 1 1 5 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Authorize.Net SIM AuthorizeNet_SIM 1 2 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 CardSave CardSave 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2019-11-19 09:47:46 Eway Rapid Eway_RapidShared 1 1 10000 0 NULL 1 0
2018-02-21 17:58:00 2018-02-21 17:58:00 FirstData Connect FirstData_Connect 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2019-11-19 09:47:46 GoCardless GoCardless 1 2 10000 0 NULL 1 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Migs ThreeParty Migs_ThreeParty 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Migs TwoParty Migs_TwoParty 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2019-11-19 09:47:47 Mollie Mollie 1 1 8 0 NULL 1 0
2018-02-21 17:58:00 2018-02-21 17:58:00 MultiSafepay MultiSafepay 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Netaxept Netaxept 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 NetBanx NetBanx 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2019-11-19 09:47:47 PayFast PayFast 1 1 10000 0 NULL 1 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Payflow Pro Payflow_Pro 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2019-03-11 13:20:10 PaymentExpress PxPay PaymentExpress_PxPay 1 1 10000 0 NULL 1 0
2018-02-21 17:58:00 2019-03-11 13:20:10 PaymentExpress PxPost PaymentExpress_PxPost 1 1 10000 0 NULL 1 0
2018-02-21 17:58:00 2019-11-19 09:47:47 PayPal Express PayPal_Express 1 1 4 0 NULL 1 0
2018-02-21 17:58:00 2018-02-21 17:58:00 PayPal Pro PayPal_Pro 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Pin Pin 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 SagePay Direct SagePay_Direct 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2019-11-19 09:47:47 SagePay Server SagePay_Server 1 2 10000 0 NULL 1 0
2018-02-21 17:58:00 2018-02-21 17:58:00 SecurePay DirectPost SecurePay_DirectPost 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Stripe Stripe 1 1 1 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 TargetPay Direct eBanking TargetPay_Directebanking 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 TargetPay Ideal TargetPay_Ideal 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 TargetPay Mr Cash TargetPay_Mrcash 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2019-11-19 09:47:48 TwoCheckout TwoCheckout 1 1 10000 0 NULL 1 0
2018-02-21 17:58:00 2019-11-19 09:47:48 WorldPay WorldPay 1 1 10000 0 NULL 1 0
2018-02-21 17:58:00 2018-02-21 17:58:00 BeanStream BeanStream 1 2 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Psigate Psigate 1 2 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 moolah AuthorizeNet_AIM 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Alipay Alipay_Express 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Buckaroo Buckaroo_CreditCard 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2019-11-19 09:47:48 Coinbase Coinbase 1 1 10000 0 NULL 1 0
2018-02-21 17:58:00 2018-02-21 17:58:00 DataCash DataCash 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Neteller Neteller 1 2 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Pacnet Pacnet 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 PaymentSense PaymentSense 1 2 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Realex Realex_Remote 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Sisow Sisow 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2019-11-19 09:47:48 Skrill Skrill 1 2 10000 0 NULL 1 0
2018-02-21 17:58:00 2019-11-19 09:47:48 BitPay BitPay 1 1 7 0 NULL 1 0
2018-02-21 17:58:00 2019-11-19 09:47:48 Dwolla Dwolla 1 2 6 0 NULL 1 0
2018-02-21 17:58:00 2018-02-21 17:58:00 AGMS Agms 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Barclays BarclaysEpdq\Essential 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Cardgate Cardgate 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Checkout.com CheckoutCom 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Creditcall Creditcall 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Cybersource Cybersource 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 ecoPayz Ecopayz 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Fasapay Fasapay 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Komoju Komoju 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Multicards Multicards 1 2 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Pagar.Me Pagarme 1 2 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Paysafecard Paysafecard 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Paytrace Paytrace_CreditCard 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Secure Trading SecureTrading 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 SecPay SecPay 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 WeChat Express WeChat_Express 1 2 10000 0 NULL 0 0
2018-02-21 17:58:00 2019-11-19 09:47:49 WePay WePay 1 1 3 0 NULL 0 0
2018-02-21 17:58:00 2018-02-21 17:58:00 Braintree Braintree 1 1 3 0 NULL 0 0
2018-02-21 17:58:00 2019-11-19 09:47:49 Custom Custom1 1 1 21 0 NULL 1 0
2018-02-21 17:58:00 2018-02-21 17:58:00 FirstData Payeezy FirstData_Payeezy 1 1 10000 0 NULL 0 0
2018-02-21 17:58:00 2019-11-19 09:47:49 GoCardless GoCardlessV2\Redirect 1 1 9 0 NULL 1 0
2018-02-21 17:58:00 2018-02-21 17:58:00 PagSeguro PagSeguro 1 1 10000 0 NULL 0 0
2018-04-13 17:03:13 2018-04-13 17:03:13 PAYMILL Paymill 1 1 10000 0 NULL 0 0
2018-04-28 16:55:19 2018-04-28 16:55:19 Custom Custom 1 1 20 0 NULL 1 0
2018-04-28 18:26:32 2019-11-19 09:47:49 Custom Custom2 1 1 22 0 NULL 1 0
2019-11-19 09:47:50 2019-11-19 09:47:50 Custom Custom3 1 1 23 0 NULL 1 0
gateways_types
id alias name
1 credit_card Credit Card
2 bank_transfer Bank Transfer
3 paypal PayPal
4 bitcoin Bitcoin
5 dwolla Dwolla
6 custom1 Custom
7 alipay Alipay
8 sofort Sofort
9 sepa SEPA
10 gocardless GoCardless
11 apple_pay Apple Pay
12 custom2 Custom
13 custom3 Custom
payment_types
id name gateway_type_id
1 Apply Credit NULL
2 Bank Transfer 2
3 Cash NULL
4 Debit 1
5 ACH 2
6 Visa Card 1
7 MasterCard 1
8 American Express 1
9 Discover Card 1
10 Diners Card 1
11 EuroCard 1
12 Nova 1
13 Credit Card Other 1
14 PayPal 3
15 Google Wallet NULL
16 Check NULL
17 Carte Blanche 1
18 UnionPay 1
19 JCB 1
20 Laser 1
21 Maestro 1
22 Solo 1
23 Switch 1
24 iZettle 1
25 Swish 2
26 Venmo NULL
27 Money Order NULL
28 Alipay 7
29 Sofort 8
30 SEPA 9
31 GoCardless 10
32 Bitcoin 4
33 Zelle NULL
Thanks in advance.