# Troubleshoot "Cannot open the connection" issue !(/Users/kei/.exploratory/projects/Guide_Notes_nrr7xrF3/markdown_output/image-1553232082624.png) The error above is coming from the underlying R runtime which Exploratory uses. It may happen when you view a Note, Slide or Dashboard. If you see this error, please try the following. * Check the repository folder exists. Usually, the repository folder is under your home directory with the name ".exploratory". * Check that the repository folder and subfolders are writable. You can try creating an empty folder or file to check it. * Check that you have a disk space. This issue may happen if you don't have enough disk space. Once you chec above, please try to restart Exploratory. If it doesn't solve the issue, please contact us from the chat on https://exploratory.io/, or send us an email to [firstname.lastname@example.org](mailto:email@example.com).
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