I want to vote a post in my nodebb, but nothing happen, no error log.
how can I debug?

error log:
20/5 08:00 [179] - error: Could not parse email.json, syntax error? Skipping...
20/5 08:00 [179] - error: Error: Callback was already called.
at /opt/nodebb/node_modules/async/lib/async.js:30:31
at /opt/nodebb/node_modules/async/lib/async.js:251:21
at /opt/nodebb/src/emailer.js:45:6
at /opt/nodebb/public/src/modules/translator.js:160:6
at /opt/nodebb/public/src/modules/translator.js:180:4
at /opt/nodebb/public/src/modules/translator.js:226:6
at /opt/nodebb/public/src/modules/translator.js:289:5

problem solved with the latest fix, thanks~