No application space on MacBook

The Coach's Wife Said:

"No application space on MacBook received an error 'your system has run out of application memory'"

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Getting that message, restart your Mac.

Sorry, but that is just not enough information in order for us to be able to assist you with a potential solution.

• Writing an effective Apple Support Communities question - Apple Support Communities

For example:

• What exact model is your MacBook?
• How much system RAM does it have?
• Which version of macOS is it running?
• Does this occur when you try running multiple apps simultaneously?