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I had a similar error
/{path to project root}/Pods/Target Support Files/Pods-{project name}/Pods-{project name}-frameworks.sh: Permission denied
Command PhaseScriptExecution failed with a nonzero exit code
In my case I had received a zip of a repo that included the Pods folder. It turns out that at some point between it being originally created and sent to me, the *.sh files in Pods/Target Support Files/Pods-{PROJECT}/ had all lost their execute permissions. Giving those files +x was the solution