ctrl b causes error

[ORESoftware]

this error is caused when hitting ctrl b

Fri, 17 Apr 2020 01:16:00 GMT app:cm:html-to-pdf INFO  listening on port: 3701 
 Line # 2, mode: SEARCHING, Log level: 1,  no search term.   bunion consumer warning: Could not parse: 
bunion consumer warning: Parse error was: SyntaxError: Unexpected end of JSON input
    at JSON.parse (<anonymous>)
    at readFromFile (/home/oleg/codes/channelmeter/html-to-pdf/node_modules/bunion/dist/consumer/cli.js:122:22)
    at gotoLine (/home/oleg/codes/channelmeter/html-to-pdf/node_modules/bunion/dist/consumer/cli.js:251:49)
    at ReadStream.<anonymous> (/home/oleg/codes/channelmeter/html-to-pdf/node_modules/bunion/dist/consumer/cli.js:532:13)
    at ReadStream.emit (events.js:311:20)
    at addChunk (_stream_readable.js:294:12)
    at readableAddChunk (_stream_readable.js:275:11)
    at ReadStream.Readable.push (_stream_readable.js:209:10)
    at TTY.onStreamRead (internal/stream_base_commons.js:186:23)