Documentation fails to deploy

Hi all-

I am trying to add documentation to a repo according to the instructions for Documenter.jl. I added a key to github with read/write access, and the corresponding key to Travis-CI. Unfortunately, it returns the error below. Do you have any idea why it is failing?

Thanks

Initialized empty Git repository in /tmp/jl_h7RrMD/.git/

429ssh: Could not resolve hostname https: Name or service not known

430fatal: Could not read from remote repository.

431

432Please make sure you have the correct access rights

433and the repository exists.

434┌ Error: Git failed to fetch git@https:/github.com/itsdfish/Minesweeper.jl.git

435│ This can be caused by a DOCUMENTER_KEY variable that is not correctly set up.

436│ Make sure that the environment variable is properly set up as a Base64-encoded string

437│ of the SSH private key. You may need to re-generate the keys with DocumenterTools.

438└ @ Documenter ~/.julia/packages/Documenter/6vUwN/src/Documenter.jl:552

439┌ Error: Failed to push:

440│ exception =

441│ failed process: Process(`git fetch upstream`, ProcessExited(128)) [128]

442│

443│ Stacktrace:

444│ [1] pipeline_error at ./process.jl:525 [inlined]

445│ [2] run(::Cmd; wait::Bool) at ./process.jl:440

446│ [3] run at ./process.jl:438 [inlined]

447│ [4] (::Documenter.var"#git_commands#27"{String,SubString{String},String,Array{Any,1},Bool,String,String})(::String) at /home/travis/.julia/packages/Documenter/6vUwN/src/Documenter.jl:550

448│ [5] (::Documenter.var"#26#32"{String})() at /home/travis/.julia/packages/Documenter/6vUwN/src/Documenter.jl:655

449│ [6] cd(::Documenter.var"#26#32"{String}, ::String) at ./file.jl:104

450│ [7] #25 at /home/travis/.julia/packages/Documenter/6vUwN/src/Documenter.jl:655 [inlined]

451│ [8] withenv(::Documenter.var"#25#31"{String,String}, ::Pair{String,String}) at ./env.jl:161

452│ [9] (::Documenter.var"#24#30"{String,String,SubString{String},String})(::String, ::IOStream) at /home/travis/.julia/packages/Documenter/6vUwN/src/Documenter.jl:654

453│ [10] mktemp(::Documenter.var"#24#30"{String,String,SubString{String},String}, ::String) at ./file.jl:686

454│ [11] mktemp(::Function) at ./file.jl:684

455│ [12] git_push(::String, ::String, ::String; branch::String, dirname::String, target::String, sha::SubString{String}, devurl::String, versions::Array{Any,1}, forcepush::Bool, deploy_config::Documenter.Travis, subfolder::String, is_preview::Bool) at /home/travis/.julia/packages/Documenter/6vUwN/src/Documenter.jl:639

456│ [13] #18 at /home/travis/.julia/packages/Documenter/6vUwN/src/Documenter.jl:504 [inlined]

457│ [14] mktempdir(::Documenter.var"#18#20"{SubString{String},String,String,String,String,Array{Any,1},Bool,Documenter.Travis,String,String,String,Bool}, ::String; prefix::String) at ./file.jl:709

458│ [15] mktempdir(::Function, ::String) at ./file.jl:707 (repeats 2 times)

459│ [16] (::Documenter.var"#17#19"{String,String,String,Nothing,String,Array{Any,1},Bool,Documenter.Travis,String,String,String,Bool})() at /home/travis/.julia/packages/Documenter/6vUwN/src/Documenter.jl:503

460│ [17] cd(::Documenter.var"#17#19"{String,String,String,Nothing,String,Array{Any,1},Bool,Documenter.Travis,String,String,String,Bool}, ::String) at ./file.jl:104

461│ [18] deploydocs(; root::String, target::String, dirname::String, repo::String, branch::String, repo_previews::String, branch_previews::String, deps::Nothing, make::Nothing, devbranch::String, devurl::String, versions::Array{Any,1}, forcepush::Bool, deploy_config::Documenter.Travis, push_preview::Bool) at /home/travis/.julia/packages/Documenter/6vUwN/src/Documenter.jl:480

462│ [19] top-level scope at /home/travis/build/itsdfish/Minesweeper.jl/docs/make.jl:17

463│ [20] include(::Function, ::Module, ::String) at ./Base.jl:380

464│ [21] include(::Module, ::String) at ./Base.jl:368

465│ [22] exec_options(::Base.JLOptions) at ./client.jl:296

466│ [23] _start() at ./client.jl:506

467└ @ Documenter ~/.julia/packages/Documenter/6vUwN/src/Documenter.jl:660

468The command "julia --project=docs/ docs/make.jl" exited with 0.