# How fix Solution when have been added website from filesystem without project file

**Conversion tool migration aborted.**

When migrating a webforms solution it is possible to experience an error related to a project with an invalid empty extension. 

<table><thead><tr><th width="194">Error</th><th>Message</th></tr></thead><tbody><tr><td>WFMAP0013</td><td>Cannot convert projects with extension . Please remove the project with extension from the solution you want to convert and try it again.</td></tr></tbody></table>

### When this error happened?

This happens when a website is added to a solution from a filesystem directory.

Step 1: Select add website

<figure><img src="/files/4pWoNHCyWOvow2RDCXBU" alt=""><figcaption><p>Add existing website</p></figcaption></figure>

Step 2: Select the directory from filesystem

<figure><img src="/files/Zvj71OoZnr3hMk3hQL8b" alt=""><figcaption><p>Select directory for website</p></figcaption></figure>

Step 3: WebSite is added to solution

<figure><img src="/files/iF25A45a2YY5UjPBsBiy" alt=""><figcaption><p>WebSite added</p></figcaption></figure>

### How to Fix?

Step 1: Remove the existing website from solution

<figure><img src="/files/a4RxaaLXXS4MWfvmdm3w" alt=""><figcaption><p>Remove website</p></figcaption></figure>

Step 2: Add new project (This will be used as a template for the existing website)

<figure><img src="/files/DbrIXqjvDEuv37PYtrW4" alt=""><figcaption><p>Add new project</p></figcaption></figure>

Step 3: Select new Web Application

<figure><img src="/files/wWHEDwrhp7tLXeotJwOc" alt=""><figcaption><p>Select Web Application</p></figcaption></figure>

Step 4: Configure the project with a different name of the existing folder with the website files in it.

<figure><img src="/files/71uNriXQhahfuqq6tSoY" alt=""><figcaption></figcaption></figure>

Step 5: Create the WebForms project

<figure><img src="/files/Q6ga8NIvy9hg5SXJ3CA1" alt=""><figcaption><p>Create the WebForms Application</p></figcaption></figure>

Step 6: Rename the created project with original website name

Step 7: Remove the project from the solution.

Step 8: Copy the generated csproj file to the original website directory

Step 10: Add the existing project in the original website directory to the solution

<figure><img src="/files/dV67tyqmB0BmRC7qmz3z" alt=""><figcaption><p>Add the existing project</p></figcaption></figure>

Step 11: Select option in solution explorer Show all Files

<figure><img src="/files/1LoMiEHPL3WFHqwnwOvp" alt=""><figcaption><p>Show all files</p></figcaption></figure>

Step 12: Include the files to the project and exclude the ones that are not going to be part

Step 13: Add the needed references to the project. (Can use as reference the ones in the solution file, that exist for the original website)

<figure><img src="/files/gVJ64LDSkkLBBqfCKUm9" alt=""><figcaption><p>Solution File References</p></figcaption></figure>

Step 14: Compile and try to migrate


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