local.ERROR: syntax error, unexpected '?', expecting variable (T_VARIABLE)

Question

I've uploaded my laravel 5.6 project on Ubuntu 16.04.4. When i upload my working project(API's tested on postman) on it, it returns a blank response and on the url it states "This page isn’t working" "HTTP ERROR 500".

From what I've learnt is that the php version of my project and is different from the one on the server.

My project is built on php 7.1.9 and the server php version is 7.1.18

Any form of help or information will be useful. Thank you in advance

Log:

local.ERROR: syntax error, unexpected '?', expecting variable (T_VARIABLE) {"exception":"[object] (Symfony\\Component\\Debug\\Exception\\FatalThr$
[stacktrace]
#0 /var/www/narcodes/vendor/composer/ClassLoader.php(322): Composer\\Autoload\\includeFile('/var/www/narcod...')
#1 [internal function]: Composer\\Autoload\\ClassLoader->loadClass('Symfony\\\\Compone...')
#2 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/RouteCompiler.php(39): spl_autoload_call('Symfony\\\\Compone...')
#3 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/Route.php(284): Illuminate\\Routing\\RouteCompiler->compile()
#4 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/Route.php(261): Illuminate\\Routing\\Route->compileRoute()
#5 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/RouteCollection.php(197): Illuminate\\Routing\\Route->matches(Object(Illuminate\\Http\\Request), t$
#6 [internal function]: Illuminate\\Routing\\RouteCollection->Illuminate\\Routing\\{closure}(Object(Illuminate\\Routing\\Route), 'api/user')
#7 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Support/Arr.php(175): call_user_func(Object(Closure), Object(Illuminate\\Routing\\Route), 'api/user')
#8 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Support/Collection.php(657): Illuminate\\Support\\Arr::first(Array, Object(Closure), NULL)
#9 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/RouteCollection.php(198): Illuminate\\Support\\Collection->first(Object(Closure))
#10 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/RouteCollection.php(164): Illuminate\\Routing\\RouteCollection->matchAgainstRoutes(Object(Illumin$
#11 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/Router.php(619): Illuminate\\Routing\\RouteCollection->match(Object(Illuminate\\Http\\Request))
#12 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/Router.php(608): Illuminate\\Routing\\Router->findRoute(Object(Illuminate\\Http\\Request))
#13 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/Router.php(597): Illuminate\\Routing\\Router->dispatchToRoute(Object(Illuminate\\Http\\Request))
#14 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(176): Illuminate\\Routing\\Router->dispatch(Object(Illuminate\\Http\\Request))
#15 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(30): Illuminate\\Foundation\\Http\\Kernel->Illuminate\\Foundation\\Http\\{closure}(O$
#16 /var/www/narcodes/vendor/fideloper/proxy/src/TrustProxies.php(57): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#17 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(151): Fideloper\\Proxy\\TrustProxies->handle(Object(Illuminate\\Http\\Request), Obj$
#18 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illumina$
#19 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(31): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\$
#20 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(151): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Il$
#21 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illumina$
#22 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(31): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\$
#23 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(151): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Il$
#24 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illumina$
#25 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php(27): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\$
#26 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(151): Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize->handle(Object(Ill$
#27 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illumina$
#28 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/CheckForMaintenanceMode.php(51): Illuminate\\Routing\\Pipeline->Illuminate\\Ro$
#29 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(151): Illuminate\\Foundation\\Http\\Middleware\\CheckForMaintenanceMode->handle(Obj$
#30 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illumina$
#31 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(104): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illumina$
#32 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(151): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))
#33 /var/www/narcodes/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(116): Illuminate\\Foundation\\Http\\Kernel->sendRequestThroughRouter(Object(Il$
#34 /var/www/narcodes/public/index.php(55): Illuminate\\Foundation\\Http\\Kernel->handle(Object(Illuminate\\Http\\Request))
#35 {main}
"}

Without your code / error logs / more information, we can't really help. — Script47
– Script47, Commented Jun 27, 2018 at 22:23
I'm fairly sure your server isn't running 7.1.18. This is usually the error I see from PHP 5.6 or below when using null coalescing operators. — Devon Bessemer
– Devon Bessemer, Commented Jun 27, 2018 at 22:24
@Devon its 7.1.18 , I've used multiple php versions to check if they work like 5.6, 7.2 but they did'nt work — Varun Chopra
– Varun Chopra, Commented Jun 27, 2018 at 22:27
Simple check, just output phpversion and see what you get. — Script47
– Script47, Commented Jun 27, 2018 at 22:29
if more information is required please let me know, I'm new to this so i dont know what all should i provide so that you can help me — Varun Chopra
– Varun Chopra, Commented Jun 27, 2018 at 22:34

lucasvm1980 · Accepted Answer · 2018-10-25 21:29:16Z

4

This error is because your php server version, can be different from what you see when doing php -v.

The right way to check this is to do a php info on your server side, not on CLI.

If you need to enable php 7.2 on apache this is the command on ubuntu

first disable old php version

sudo a2dismod php7.0

enable new version

sudo a2enmod php7.2

answered Oct 25, 2018 at 21:29

lucasvm1980

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