Working on linux to be on a newer version of SBCL.

However none of the 3 Linux compatible plugins enable me to connect.

Performed a chmod x on the file.
~/.eclipse/360744286_linux_gtk_x86_64/plugins/de.defmacro.dandelion.env.sbcl.mac.intel_2.0.7/binary$ chmod +x environment_sbcl_2.0.7$

I enabled read and write.

The errors that persist are.

Error in background evaluation
java.net.ConnectException: Connection refused (Connection refused)

Starting eval server failed
Cannot run program "/snap/eclipse/48/../../../home/tr/.eclipse/360744286_linux_gtk_x86_64/plugins/de.defmacro.dandelion.env.sbcl.mac.intel_2.0.7/binary/environment_sbcl_2.0.7": error=13, Permission denied

Thanks.