Config Processing Error on circle-ci [Build error]

I am facing a problem with Config Processing Error on circle-ci "

Config Processing Error

 !/bin/sh -eo pipefail Unable to parse YAML while parsing a block collection  in 'string', line 22, column 13:                 - node_modules                 ^ expected <block end>, but found '?'  in 'string', line 23, column 13:                 key: app-{{ checksum \"package.js ...  -------Warning: This configuration was auto-generated to show you the message above.Don't rerun this job. Rerunning will have no effect.falseExited with code exit status 1CircleCI received exit code 1

this is my repo