device: RPi model 3
OS: rasbian Buster
Node-red vv1.0.6
node.js v12.16.3
Dashboard v2.22.1

On starting Node-RED the following shows up in the log
pi@yellowpi:~ $ node-red
20 May 09:45:54 - [info]

Welcome to Node-RED

20 May 09:45:54 - [info] Node-RED version: v1.0.6
20 May 09:45:54 - [info] Node.js version: v12.16.3
20 May 09:45:54 - [info] Linux 4.19.97-v7+ arm LE
20 May 09:45:55 - [info] Loading palette nodes
20 May 09:45:57 - [info] Dashboard version 2.22.1 started at /ui
20 May 09:45:58 - [warn] ------------------------------------------------------
20 May 09:45:58 - [warn] [node-red-contrib-solace/solace] Error: Cannot find module '/usr/lib/node_modules/node-red/red/red'
Require stack:

• /home/pi/.node-red/node_modules/node-red-contrib-solace/solace/lib/solaceConnectionPool.js
• /home/pi/.node-red/node_modules/node-red-contrib-solace/solace/solace.js
• /usr/lib/node_modules/node-red/node_modules/@node-red/registry/lib/loader.js
• /usr/lib/node_modules/node-red/node_modules/@node-red/registry/lib/index.js
• /usr/lib/node_modules/node-red/node_modules/@node-red/runtime/lib/nodes/index.js
• /usr/lib/node_modules/node-red/node_modules/@node-red/runtime/lib/index.js
• /usr/lib/node_modules/node-red/lib/red.js
• /usr/lib/node_modules/node-red/red.js
  20 May 09:45:58 - [warn] ------------------------------------------------------

On a Mac (10.14.6) no error shows in the startup, but the node(s) do not show up in the sidebar.