Your requirements could not be resolved to an installable set of packages.

[MakerTim]

What did you do?

On installing this module with my lumen5.7 installation i got a error
./composer.phar require nordsoftware/lumen-oauth2
and you are stating that you support 5.3+ so 5.7 shouldn't be a problem right?

"require": {
"php": ">=7.1.3",
"laravel/lumen-framework": "5.7.*",
"vlucas/phpdotenv": "~2.2",
"zircote/swagger-php": "^3.0"
},

[Jalle19]

Can you post the full error message?

[MakerTim]

this is a copy of the console
https://pastebin.com/ret5SUMK

[Jalle19]

The problem is that we depend on a fairly old version of league-oauth2-server (4.x). If you're starting a new project I think it's better if you try to integrate the latest version of league-oauth2-server directly instead of using this library, we don't have the manpower to maintain and update it at the moment.