# MOLFiniteDifference Cannot install

**URL:** <https://discourse.julialang.org/t/molfinitedifference-cannot-install/103017>\
**Category:** New to Julia\
**Tags:** question, package\
**Created:** [August 21, 2023, 2:27am UTC](https://discourse.julialang.org/t/molfinitedifference-cannot-install/103017 "2023-08-21T02:27:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![joaofernandez2023](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/joaofernandez2023/32/52377_2.png) [@joaofernandez2023](https://discourse.julialang.org/u/joaofernandez2023)\
**Post date:** [August 21, 2023, 2:27am UTC](https://discourse.julialang.org/t/molfinitedifference-cannot-install/103017/1 "2023-08-21T02:27:55Z")

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The error that appears is the following:

import Pkg; Pkg.add(“MOLFiniteDifference”)  
ERROR: The following package names could not be resolved:

- MOLFiniteDifference (not found in project, manifest or registry)

In my code when I need to use this module:

import Pkg; Pkg.add(“MOLFiniteDifference”)  
ERROR: The following package names could not be resolved:

- MOLFiniteDifference (not found in project, manifest or registry)

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**Author:** ![Pbellive](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pbellive/32/3604_2.png) [@Pbellive](https://discourse.julialang.org/u/Pbellive)\
**Post date:** [August 21, 2023, 3:55am UTC](https://discourse.julialang.org/t/molfinitedifference-cannot-install/103017/2 "2023-08-21T03:55:05Z")

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Hi @joaofernandez2023

Welcome to the julia discourse! I believe you’re seeing this error because MOLFiniteDifference is not the name of a currently registered julia package. MOLFiniteDifference seems to be the name of a type used in the package [MethodOfLines.jl](https://docs.sciml.ai/MethodOfLines/stable/). That is most likely the package you need to install.

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<div class="post-metadata">

**Author:** ![joaofernandez2023](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/joaofernandez2023/32/52377_2.png) [@joaofernandez2023](https://discourse.julialang.org/u/joaofernandez2023)\
**Post date:** [August 21, 2023, 7:43pm UTC](https://discourse.julialang.org/t/molfinitedifference-cannot-install/103017/3 "2023-08-21T19:43:37Z")

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After researching I reached the same conclusion and installed the MethodOfLines.jl. Nevertheless I continue to have the same error in my code and to be requested to add MOLFiniteDifference.jl. Is it possible to add it directly from the github from MethodOfLines.jl (since it is one of the files that compounds this package.