set -euo returns unbound variable

install.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 # https://wizardzines.com/comics/bash-errors/bash-errors.png
-set -euo pipefail
+#set -euo pipefail
 
 exec >> >(tee -i /tmp/install.log)
 exec 2>&1