Client do not shows avatar's from jira

Rocket.Chat Apps
1

Hello all!

We using snap version rocket, and after I change track from 2.x to 3.x I have some problems.
We make integration Jira and rocket by web hook (with script on rocket side).
Rocket version now 3.12.1
Jira 8.5.1

pix01
Project avatar and user avatar does not shows, but in Browser version all shows right
pix02

and issue avatar show larger than it is be

The script what we are using:

Script 
/*jshint  esnext:true*/
const DESC_MAX_LENGTH = 300;
const JIRA_LOGO = 'data:image/png;base64,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';
function stripDesc(str) {
  	if (str === null || typeof str == 'undefined') {
  	     	return "";
	}	
  	return (str && str.length > DESC_MAX_LENGTH) ? str.slice(0, DESC_MAX_LENGTH - 3) + '...' : str;
}

function prepareAttachment({issue, user}, text) {
	let issueType = issue.fields.issuetype;
  const currentTime = (new Date()).toISOString();
	let res = {
		author_name: user.displayName,
        author_icon: user.avatarUrls['32x32'],
        thumb_url: issueType.iconUrl,
        ts: currentTime
	};
	if (text) {
		text = text.replace(/\{\{(user|issue)\.([^a-z_0-9]+)\}\}/g, (m, type, key) => (type==='user' ? user : issue)[key]);
		res.text = text;
	}
	return res;
}
class Script {
	process_incoming_request({request}) { 
		const data = request.content;
		try {
			if (!data.issue || (data.user && data.user.name === 'gitlab')) {
				return;
			}
			let issue = data.issue;
			let baseJiraUrl = issue.self.replace(/\/rest\/.*$/, '');
			let user = data.user;
			let assignedTo = (issue.fields.assignee && issue.fields.assignee.name !== user.name) ? `, assigned to ${issue.fields.assignee.displayName}` : '';
			let issueSummary = `[${issue.key}](${baseJiraUrl}/browse/${issue.key}) #${issue.fields.summary}# _(${issue.fields.priority.name.replace(/^\s*\d*\.\s*/, '')}${assignedTo})_`;
			let message = {
              
				icon_url: (issue.fields.project && issue.fields.project.avatarUrls && issue.fields.project.avatarUrls['48x48']) || JIRA_LOGO
				, attachments: []
			};

			if (data.webhookEvent === 'jira:issue_created') {
				message.attachments.push(prepareAttachment(data, `*Created* ${issueSummary}:\n${stripDesc(issue.fields.description)}`));
			} else if (data.webhookEvent === 'jira:issue_deleted') {
				message.attachments.push(prepareAttachment(data, `*Deleted* ${issueSummary}`));
			} else if (data.webhookEvent === 'jira:issue_updated') {
				if (data.changelog && data.changelog.items) { // field update
					let logs = [];
					data.changelog.items.forEach((change) => {
						if (!change.field.match('status|resolution|comment|priority') ) {  
							return;
						}
						if (change.field==='description') {
							logs.push(`Changed *description* to:\n${stripDesc(change.toString)}`);
						} else {
							logs.push(`*${change.field}* changed from ${change.fromString} to *${change.toString}*`);
						}
					});
					logs.length && message.attachments.push(prepareAttachment(data, `*Updated* ${issueSummary}:\n  - ${logs.join('\n  - ')}`));
				}

				if (data.comment) { // comment update
					let comment = data.comment;
					let action = comment.created !== comment.updated ? 'Изменили комментарий' : 'Прокомментировали';
					message.attachments.push(prepareAttachment(data, `*${action}* on ${issueSummary}:\n${stripDesc(comment.body)}`));
				}
			}

			if (message.text || message.attachments.length) {
				return {content:message};
			}
		} catch(e) {
			console.log('jiraevent error', e);
			return {
				error: {
					success: false,
					message: `${e.message || e} ${JSON.stringify(data)}`
				}
			};
		}
	}
}