ERROR running force:auth:jwt:grant: We encountered a JSON web token error, which is likely not an issue with Salesforce CLI. Here’s the error: error:0906D06C:PEM routines:PEM_read_bio:no start line

[fehays]

ERROR running force:auth:jwt:grant: We encountered a JSON web token error, which is likely not an issue with Salesforce CLI. Here’s the error: error:0906D06C:PEM routines:PEM_read_bio:no start line

[pauldchuang]

The same error happened to me.

Solution: I just realized I used the wrong set of JWT key. (Meaning the key I used in command line does not match the one in connected app.)

[ppgit007]

Thanks buddy. Actually, I missed to upload the .crt file in connected app, hence was facing the issue. Edited and updated the server.crt and it got authenticated.

[RatanPaul]

similar issue

ERROR running force:auth:jwt:grant: We encountered a JSON web token error, which is likely not an issue with Salesforce CLI. Here’s the error: invalid assertion

I am following this https://trailhead.salesforce.com/content/learn/projects/automate-cicd-with-gitlab/integrate-with-gitlab
and got the above error when I tried

sfdx force:auth:jwt:grant --clientid --jwtkeyfile C:\drive\GitLab\certificates/server.key --username [email protected] --setdefaultdevhubusername --setalias DevHub

[nandre-shraddha]

force:auth:jwt:grant : The term 'force:auth:jwt:grant' is not recognized as the name of a cmdlet, function, script
file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct
and try again.
At line:1 char:1

• force:auth:jwt:grant

•   + CategoryInfo          : ObjectNotFound: (force:auth:jwt:grant:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
  

getting this error