# Can't run composer require okta/jwt-verifier **URL:** \ **Category:** Questions\ **Created:** [July 22, 2019, 2:26am UTC](https://devforum.okta.com/t/cant-run-composer-require-okta-jwt-verifier/5729 "2019-07-22T02:26:03Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![yipwt](https://avatars.discourse-cdn.com/v4/letter/y/ecae2f/32.png) [@yipwt](https://devforum.okta.com/u/yipwt)\ **Post date:** [July 22, 2019, 2:26am UTC](https://devforum.okta.com/t/cant-run-composer-require-okta-jwt-verifier/5729/1 "2019-07-22T02:26:03Z")
Hi guys, Was trying out the tutorial for okta, but when I ran this: > composer require okta/jwt-verifier spomky-labs/jose guzzlehttp/psr7 Problem 1 - Installation request for okta/jwt-verifier ^0.2.1 → satisfiable by okta/jwt-verifier[0.2.1]. - Conclusion: remove nesbot/carbon 2.21.3 - Conclusion: don’t install nesbot/carbon 2.21.3 - okta/jwt-verifier 0.2.1 requires nesbot/carbon ^1.22 → satisfiable by nesbot/carbon[1.22.0, 1.22.1, 1.23.0, 1.24.0, 1.24.1, 1.24.2, 1.25.0, 1.25.1, 1.25.3, 1.26.0, 1.26.1, 1.26.2, 1.26.3, 1.26.4, 1.26.5, 1.26.6, 1.27.0, 1.28.0, 1.29.0, 1.29.1, 1.29.2, 1.30.0, 1.31.0, 1.31.1, 1.32.0, 1.33.0, 1.34.0, 1.34.1, 1.34.2, 1.34.3, 1.34.4, 1.35.0, 1.35.1, 1.36.0, 1.36.1, 1.36.2, 1.37.0, 1.37.1, 1.38.0, 1.38.1, 1.38.2, 1.38.3, 1.38.4, 1.39.0]. - Can only install one of: nesbot/carbon[1.26.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.26.1, 2.21.3]. - Can only install one of: nesbot/carbon[1.26.2, 2.21.3]. - Can only install one of: nesbot/carbon[1.26.3, 2.21.3]. - Can only install one of: nesbot/carbon[1.26.4, 2.21.3]. - Can only install one of: nesbot/carbon[1.26.5, 2.21.3]. - Can only install one of: nesbot/carbon[1.26.6, 2.21.3]. - Can only install one of: nesbot/carbon[1.27.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.28.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.29.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.29.1, 2.21.3]. - Can only install one of: nesbot/carbon[1.29.2, 2.21.3]. - Can only install one of: nesbot/carbon[1.30.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.31.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.31.1, 2.21.3]. - Can only install one of: nesbot/carbon[1.32.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.33.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.34.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.34.1, 2.21.3]. - Can only install one of: nesbot/carbon[1.34.2, 2.21.3]. - Can only install one of: nesbot/carbon[1.34.3, 2.21.3]. - Can only install one of: nesbot/carbon[1.34.4, 2.21.3]. - Can only install one of: nesbot/carbon[1.35.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.35.1, 2.21.3]. - Can only install one of: nesbot/carbon[1.36.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.36.1, 2.21.3]. - Can only install one of: nesbot/carbon[1.36.2, 2.21.3]. - Can only install one of: nesbot/carbon[1.37.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.37.1, 2.21.3]. - Can only install one of: nesbot/carbon[1.38.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.38.1, 2.21.3]. - Can only install one of: nesbot/carbon[1.38.2, 2.21.3]. - Can only install one of: nesbot/carbon[1.38.3, 2.21.3]. - Can only install one of: nesbot/carbon[1.38.4, 2.21.3]. - Can only install one of: nesbot/carbon[1.39.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.22.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.22.1, 2.21.3]. - Can only install one of: nesbot/carbon[1.23.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.24.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.24.1, 2.21.3]. - Can only install one of: nesbot/carbon[1.24.2, 2.21.3]. - Can only install one of: nesbot/carbon[1.25.0, 2.21.3]. - Can only install one of: nesbot/carbon[1.25.1, 2.21.3]. - Can only install one of: nesbot/carbon[1.25.3, 2.21.3]. - Installation request for nesbot/carbon (locked at 2.21.3) → satisfiable by nesbot/carbon[2.21.3]. Can pls advise how to resolve this? best regards ---
**Author:** ![andrea](https://sea1.discourse-cdn.com/oktadev/user_avatar/devforum.okta.com/andrea/32/2172_2.png) [@andrea](https://devforum.okta.com/u/andrea)\ **Post date:** [January 23, 2024, 7:16pm UTC](https://devforum.okta.com/t/cant-run-composer-require-okta-jwt-verifier/5729/2 "2024-01-23T19:16:50Z")