We see this at each upload on a fresh EP, which causes it to stop:
[2021-02-04 09:27:09.385] [ERROR] console - TypeError: Class constructor URL cannot be invoked without 'new'
at Busboy.<anonymous> (/opt/etherpad-lite/node_modules/ep_image_upload/index.js:153:28)
at Busboy.emit (node:events:378:20)
at Busboy.EventEmitter.emit (node:domain:470:12)
at Busboy.emit (/opt/etherpad-lite/node_modules/busboy/lib/main.js:38:33)
at PartStream.<anonymous> (/opt/etherpad-lite/node_modules/busboy/lib/types/multipart.js:213:13)
at PartStream.emit (node:events:378:20)
at PartStream.EventEmitter.emit (node:domain:470:12)
at HeaderParser.<anonymous> (/opt/etherpad-lite/node_modules/dicer/lib/Dicer.js:51:16)
at HeaderParser.emit (node:events:378:20)
at HeaderParser.EventEmitter.emit (node:domain:470:12)
at HeaderParser._finish (/opt/etherpad-lite/node_modules/dicer/lib/HeaderParser.js:68:8)
at SBMH.<anonymous> (/opt/etherpad-lite/node_modules/dicer/lib/HeaderParser.js:40:12)
at SBMH.emit (node:events:378:20)
at SBMH.EventEmitter.emit (node:domain:470:12)
at SBMH._sbmh_feed (/opt/etherpad-lite/node_modules/streamsearch/lib/sbmh.js:159:14)
at SBMH.push (/opt/etherpad-lite/node_modules/streamsearch/lib/sbmh.js:56:14)
We see this at each upload on a fresh EP, which causes it to stop:
in settings.json: