Approved Quotes throwing error when trying to view them

Running version 4.2.1 on self-hosted on CentOS7 using Nginx. When creating a new quote and sending the quote to the client. The client can view the quote and approve it. When I go to view the approve quote I’m getting the following error:

FatalThrowableError in Invitation.php line 68:
Class ‘App\Models\Utils’ not found

I tried searching the forums and google but not finding the error anywhere. Looking for help what might be going on here? My next step is to try upgrade to latest release.

Full dump below;
in Invitation.php line 68
at Invitation->signatureDiv() in InvoiceController.php line 186
at InvoiceController->edit(object(InvoiceRequest), ‘112’)
at call_user_func_array(array(object(InvoiceController), ‘edit’), array(object(InvoiceRequest), ‘invoices’ => ‘112’)) in compiled.php line 9584
at Controller->callAction(‘edit’, array(object(InvoiceRequest), ‘invoices’ => ‘112’)) in compiled.php line 9611
at ControllerDispatcher->dispatch(object(Route), object(InvoiceController), ‘edit’) in compiled.php line 8665
at Route->runController() in compiled.php line 8646
at Route->run(object(Request)) in compiled.php line 8355
at Router->Illuminate\Routing{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 compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in DatabaseLookup.php line 21
at DatabaseLookup->handle(object(Request), object(Closure), ‘user’) in compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in StartupCheck.php line 229
at StartupCheck->handle(object(Request), object(Closure)) in compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in QueryLogging.php line 32
at QueryLogging->handle(object(Request), object(Closure)) in compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in DuplicateSubmissionCheck.php line 41
at DuplicateSubmissionCheck->handle(object(Request), object(Closure)) in compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in compiled.php line 3312
at VerifyCsrfToken->handle(object(Request), object(Closure)) in VerifyCsrfToken.php line 44
at VerifyCsrfToken->handle(object(Request), object(Closure)) in compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in compiled.php line 13749
at ShareErrorsFromSession->handle(object(Request), object(Closure)) in compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in compiled.php line 12155
at StartSession->handle(object(Request), object(Closure)) in compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in compiled.php line 13495
at AddQueuedCookiesToResponse->handle(object(Request), object(Closure)) in compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in compiled.php line 13432
at EncryptCookies->handle(object(Request), object(Closure)) in compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in compiled.php line 10054
at Pipeline->then(object(Closure)) in compiled.php line 8356
at Router->runRouteWithinStack(object(Route), object(Request)) in compiled.php line 8347
at Router->dispatchToRoute(object(Request)) in compiled.php line 8338
at Router->dispatch(object(Request)) in compiled.php line 2575
at Kernel->Illuminate\Foundation\Http{closure}(object(Request)) in Pipeline.php line 53
at Pipeline->Illuminate\Routing{closure}(object(Request)) in Debugbar.php line 51
at Debugbar->handle(object(Request), object(Closure)) in compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in compiled.php line 3374
at CheckForMaintenanceMode->handle(object(Request), object(Closure)) in compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in HandlePreflight.php line 46
at HandlePreflight->handle(object(Request), object(Closure)) in compiled.php line 10069
at Pipeline->Illuminate\Pipeline{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing{closure}(object(Request)) in compiled.php line 10054
at Pipeline->then(object(Closure)) in compiled.php line 2519
at Kernel->sendRequestThroughRouter(object(Request)) in compiled.php line 2503
at Kernel->handle(object(Request)) in index.php line 51

I think this should be fixed in the latest version.