Currently, the file content is: JAVA_TOOL_OPTIONS="-Dnetwork.node-uri=http://<my node ip>:9053 -Dexchange.mnemonic='<my ergo mnemonic>' "
In my setup, it worked only when I added ' in the node-uri. To avoid this issue, I suggest it to be changed to the following content:
JAVA_TOOL_OPTIONS="-Dnetwork.node-uri='http://<my node ip>:9053' -Dexchange.mnemonic='<my ergo mnemonic>' "