Mautic errors after migration

Hi, i updated my mautic to the very latest from Server A, then copied over everything to Server B, Server B already has an existing Mautic 2.3 running that was installed directly on that server, yet the second instance of mautic which was migrated fails to run with the following errors

Code:
#5 /home/rapidfyc/public_html/chevage.com/marketing/app/AppKernel.php(488): SymfonyComponentDependencyInjectionContainerBuilder->compile() #6 /home/rapidfyc/public_html/chevage.com/marketing/app/AppKernel.php(249): AppKernel->initializeContainer() #7 /home/rapidfyc/public_html/chevage.com/marketing/app/AppKernel.php(109): AppKernel->boot() #8 /home/rapidfyc/public_html/chevage.com/marketing/app/middlewares/CORSMiddleware.php(92): AppKernel->handle(Object(SymfonyComponentHttpFoundationRequest), 1, true) #9 /home/rapidfyc/public_html/chevage.com/marketing/app/middlewares/CatchExceptionMiddleware.php(44): MauticMiddlewareCORSMiddleware->handle(Object(SymfonyComponentHttpFoundationRequest), 1, true) #10 /home/rapidfyc/public_html/chevage.com/marketing/app/middlewares/VersionCheckMiddleware.php(57): MauticMiddlewareCatchExceptionMiddleware->handle(Object(SymfonyComponentHttpFoundationRequest), 1, true) #11 /home/rapidfyc/public_html/chevage.com/marketing/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): MauticMiddlewareVersionCheckMiddleware->handle(Object(SymfonyComponentHttpFoundationRequest), 1, true) #12 /home/rapidfyc/public_html/chevage.com/marketing/vendor/stack/run/src/Stack/run.php(13): StackStackedHttpKernel->handle(Object(SymfonyComponentHttpFoundationRequest)) #13 /home/rapidfyc/public_html/chevage.com/marketing/index.php(32): Stackrun(Object(StackStackedHttpKernel)) #14 {main}

Could anyone help please?

Hi, i updated my mautic to the very latest from Server A, then copied over everything to Server B, Server B already has an existing Mautic 2.3 running that was installed directly on that server, yet the second instance of mautic which was migrated fails to run with the following errors

#5 /home/rapidfyc/public_html/chevage.com/marketing/app/AppKernel.php(488): SymfonyComponentDependencyInjectionContainerBuilder->compile() #6 /home/rapidfyc/public_html/chevage.com/marketing/app/AppKernel.php(249): AppKernel->initializeContainer() #7 /home/rapidfyc/public_html/chevage.com/marketing/app/AppKernel.php(109): AppKernel->boot() #8 /home/rapidfyc/public_html/chevage.com/marketing/app/middlewares/CORSMiddleware.php(92): AppKernel->handle(Object(SymfonyComponentHttpFoundationRequest), 1, true) #9 /home/rapidfyc/public_html/chevage.com/marketing/app/middlewares/CatchExceptionMiddleware.php(44): MauticMiddlewareCORSMiddleware->handle(Object(SymfonyComponentHttpFoundationRequest), 1, true) #10 /home/rapidfyc/public_html/chevage.com/marketing/app/middlewares/VersionCheckMiddleware.php(57): MauticMiddlewareCatchExceptionMiddleware->handle(Object(SymfonyComponentHttpFoundationRequest), 1, true) #11 /home/rapidfyc/public_html/chevage.com/marketing/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): MauticMiddlewareVersionCheckMiddleware->handle(Object(SymfonyComponentHttpFoundationRequest), 1, true) #12 /home/rapidfyc/public_html/chevage.com/marketing/vendor/stack/run/src/Stack/run.php(13): StackStackedHttpKernel->handle(Object(SymfonyComponentHttpFoundationRequest)) #13 /home/rapidfyc/public_html/chevage.com/marketing/index.php(32): Stackrun(Object(StackStackedHttpKernel)) #14 {main}

Could anyone help please?

oh no… anyone could help out here?

I managed to solve the above error but something else came out now

thrown in /home/rapidfyc/public_html/petbacker.com/marketing/vendor/stack/run/src/Stack/run.php on line 14
[27-Dec-2016 04:44:05 UTC] PHP Fatal error: Uncaught Error: Call to a member function send() on null in /home/rapidfyc/public_html/petback$
Stack trace:
#0 /home/rapidfyc/public_html/petbacker.com/marketing/index.php(32): Stackrun(Object(StackStackedHttpKernel))
#1 {main}
thrown in /home/rapidfyc/public_html/petbacker.com/marketing/vendor/stack/run/src/Stack/run.php on line 14

Permissions are correct… app cache cleared… im stuck…