How do I fix this? I had just finished a site for a customer

The errors in your log are very similar to another post I’ll share below. For example:

The innodb_system data file 'ibdata1' must be writable

Usually with these types of errors the culprit is something like antivirus, but if you’re certain that isn’t an issue then it could be permissions getting blocked elsewhere, the disk is out of space, or maybe corrupted. I’ll share some threads below with similar errors and potential workarounds. Something you might have to try if nothing else works is exporting/saving your Local sites and then completely wiping Local from your machine. Then re-downloading and importing your sites back into Local to try again.