Unable to parse email body

[harsspartan118]

I'm using version 1.4.4 of the plugin (since 1.4.5 was missing main.js). Upon trying to fetch an email, Obsidian shows a plugin warning Couldn't parse email body and aborts the operation.

The following stack trace is printed in the console

mailboxObject:
plugin:obsidian-google-mail:38486 {partId: '', mimeType: 'text/html', filename: '', headers: Array(23), body: {…}}body: {size: 101155, data: 'PCFET0NUWVBFIGh0bWw-DQo8aHRtbCBsYW5nPSJlbiIgeG1sbn…4OyBoZWlnaHQ6IDFweDsiPg0KPC9ib2R5PjwvaHRtbD4NCg=='}filename: ""headers: (23) [{…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}]mimeType: "text/html"partId: ""[[Prototype]]: Objectconstructor: ƒ Object()hasOwnProperty: ƒ hasOwnProperty()isPrototypeOf: ƒ isPrototypeOf()propertyIsEnumerable: ƒ propertyIsEnumerable()toLocaleString: ƒ toLocaleString()toString: ƒ toString()valueOf: ƒ valueOf()__defineGetter__: ƒ __defineGetter__()__defineSetter__: ƒ __defineSetter__()__lookupGetter__: ƒ __lookupGetter__()__lookupSetter__: ƒ __lookupSetter__()__proto__: (...)get __proto__: ƒ __proto__()set __proto__: ƒ __proto__()
plugin:obsidian-google-mail:38487 {assets: Array(1), raw_mhtml: null, raw_mtxt: null, mhtml: 'PCFET0NUWVBFIGh0bWw-DQo8aHRtbCBsYW5nPSJlbiIgeG1sbn…4OyBoZWlnaHQ6IDFweDsiPg0KPC9ib2R5PjwvaHRtbD4NCg==', mtxt: 'PCFET0NUWVBFIGh0bWw-DQo8aHRtbCBsYW5nPSJlbiIgeG1sbn…4OyBoZWlnaHQ6IDFweDsiPg0KPC9ib2R5PjwvaHRtbD4NCg=='}assets: [{…}]0: {partId: '', mimeType: 'text/html', filename: '', headers: Array(23), body: {…}}length: 1[[Prototype]]: Array(0)mhtml: "PCFET0NUWVBFIGh0bWw-DQo8aHRtbCBsYW5nPSJlbiIgeG1sbmtxt: "PCFET0NUWVBFIGh0bWw-DQo8aHRtbCBsYW5nPSJlbiIgeG1sbraw_mhtml: nullraw_mtxt: null[[Prototype]]: Objectconstructor: ƒ Object()hasOwnProperty: ƒ hasOwnProperty()isPrototypeOf: ƒ isPrototypeOf()propertyIsEnumerable: ƒ propertyIsEnumerable()toLocaleString: ƒ toLocaleString()toString: ƒ toString()valueOf: ƒ valueOf()__defineGetter__: ƒ __defineGetter__()__defineSetter__: ƒ __defineSetter__()__lookupGetter__: ƒ __lookupGetter__()__lookupSetter__: ƒ __lookupSetter__()__proto__: (...)get __proto__: ƒ __proto__()set __proto__: ƒ __proto__()
plugin:obsidian-google-mail:38081 Uncaught (in promise) Error: Unknown body type
    at eval (plugin:obsidian-google-mail:38081:13)
    at Array.map (<anonymous>)
    at getBody (plugin:obsidian-google-mail:38070:33)
    at processBody (plugin:obsidian-google-mail:38095:10)
    at saveMail (plugin:obsidian-google-mail:38488:22)
    at async fetchMails (plugin:obsidian-google-mail:38556:5)

Attached is the email that I decoded from the base64 encoded response of the Gmail API.
HTG newsletter.html.txt