Mailspring: Cannot read property 'includes' of null after reading a few mails

[jbbr]

Steps which result in the error:

• Start Mailspring

• click some mails in the inbox while in the background the cache is updated/mails are synced ("Caching recent mail" is shown)

• Suddenly when clicking a mail I get the error message:

One this message is shown, is sticks there and no mails can be read. A restart of Mailspring fixes the problem temporarily. After some usage the message is shown again.

Full Error stacktrace

TypeError: Cannot read property 'includes' of null
    at files.filter.f (/internal_packages/message-list/lib/message-item.jsx:106:62)
    at Array.filter (native)
    at MessageItem._renderAttachments (/internal_packages/message-list/lib/message-item.jsx:106:33)
    at MessageItem._renderFull (/internal_packages/message-list/lib/message-item.jsx:289:19)
    at MessageItem.render (/internal_packages/message-list/lib/message-item.jsx:298:66)
    at h (/usr/share/mailspring/resources/app.asar/node_modules/react-dom/cjs/react-dom.production.min.js:130:280)
    at beginWork (/usr/share/mailspring/resources/app.asar/node_modules/react-dom/cjs/react-dom.production.min.js:133:485)
    at d (/usr/share/mailspring/resources/app.asar/node_modules/react-dom/cjs/react-dom.production.min.js:161:93)
    at f (/usr/share/mailspring/resources/app.asar/node_modules/react-dom/cjs/react-dom.production.min.js:161:417)
    at g (/usr/share/mailspring/resources/app.asar/node_modules/react-dom/cjs/react-dom.production.min.js:162:149)
    at m (/usr/share/mailspring/resources/app.asar/node_modules/react-dom/cjs/react-dom.production.min.js:169:173)
    at w (/usr/share/mailspring/resources/app.asar/node_modules/react-dom/cjs/react-dom.production.min.js:168:413)
    at z (/usr/share/mailspring/resources/app.asar/node_modules/react-dom/cjs/react-dom.production.min.js:167:32)
    at u (/usr/share/mailspring/resources/app.asar/node_modules/react-dom/cjs/react-dom.production.min.js:165:441)
    at Object.enqueueSetState (/usr/share/mailspring/resources/app.asar/node_modules/react-dom/cjs/react-dom.production.min.js:108:299)
    at MessageList.A.setState (/usr/share/mailspring/resources/app.asar/node_modules/react/cjs/react.production.min.js:12:357)
    at MessageStore.MessageList._onChange (/internal_packages/message-list/lib/message-list.jsx:353:10)
    at EventEmitter.eventHandler (/src/global/mailspring-store.es6:125:23)
    at emitOne (events.js:120:20)
    at EventEmitter.emit (events.js:210:7)
    at MessageStore.trigger (/src/global/mailspring-store.es6:137:26)
    at query.then.items (/src/flux/stores/message-store.es6:298:12)
    at <anonymous>

What operating system are you using?

Arch Linux x64

What version of Mailspring are you using?

1.2.1

Bug?

Do you have any third-party plugins installed? If so, which ones?

No

Is the issue related to a specific email provider (Gmail, Exchange, etc.)?

Unknown, I'm using plain IMAP and GMail accounts

Is the issue reproducible with a particular attachment, message, signature, etc?

Any message, once occurred no message can be read.

[DarkSpyro003]

I'm having the same issue. This seems to mainly happen when rapidly switching through old messages in a large mailbox (at least for me).

[feliarana]

Same problem here.

TypeError: Cannot read property 'includes' of null
    at files.filter.f (/internal_packages/message-list/lib/message-item.jsx:106:62)
    at Array.filter (native)
    at MessageItem._renderAttachments (/internal_packages/message-list/lib/message-item.jsx:106:33)
    at MessageItem._renderFull (/internal_packages/message-list/lib/message-item.jsx:289:19)
    at MessageItem.render (/internal_packages/message-list/lib/message-item.jsx:298:

Same mailspring version, no plugins installed. Only using a gmail account. Using Linux Mint 18.3

[simtrax]

Same issue here.

[gustoune]

same issue.

[curtisgibby]

Until this is resolved, users should know that just closing the Mailspring window (Ctrl-W) won't fix the symptoms, at least for me. You have to completely quit the app (Ctrl-Q) and restart it to be able to see your emails correctly again.

[bengotow]

Hey folks, thanks for reporting this - I've tracked this down and it'll be fixed in the next release, which should go out in a day or two. 👍 Sorry for the wait!

[bengotow]

Hey folks—this shipped in version 1.3.0. The app should have auto-updated by now, but if not you can download the latest release from https://www.getmailspring.com/download. Enjoy!