Unable to launch webkit or take a screenshot with playwright - automation

Question

But it works with chromium.
playwright: 1.8.0
node: 14.15
Ubuntu: 20.04
this is my code.
const playwright = require("playwright");
(async () => {
for (const browserType of ["chromium", "firefox", "webkit"]) {
const browser = await playwright[browserType].launch();
const context = await browser.newContext();
const page = await context.newPage();
await page.goto("http://whatsmyuseragent.org/");
await page.screenshot({ path: `example-${browserType}.png` });
await browser.close();
}
})();

Answer 1

On ubuntu 20.04, I was getting errors when running my first playwright script:
node first_script.js after installing via npm i -D playwright (playwright v1.10.0 and v10.19.0) per playwright install instructions
const { webkit } = require('playwright');
(async () => {
const browser = await webkit.launch();
const page = await browser.newPage();
await page.goto('http://whatsmyuseragent.org/');
await page.screenshot({ path: `whatsmyuseragent.png` });
await browser.close();
})();
saw errors that included:
"error while loading shared libraries: libharfbuzz-icu.so.0: cannot open shared object file: No such file or directory"
Per several bugs #1935 #2621, running the following allowed me to run successfully:
sudo apt-get install libgles2 gstreamer1.0-libav libharfbuzz-icu0 libwoff1 libgstreamer-plugins-bad1.0-0 libgstreamer-gl1.0-0 libwebp-dev
then tried to run 2nd script with chrome(chromium), firefox and webkit on same ubuntu 20.04 node second_script.js
const playwright = require('playwright');
(async () => {
for (const browserType of ['chromium', 'firefox', 'webkit']) {
const browser = await playwright[browserType].launch();
const context = await browser.newContext();
const page = await context.newPage();
await page.goto('http://whatsmyuseragent.org/');
await page.screenshot({ path: `example-${browserType}.png` });
await browser.close();
}
})();
and got errors:
[pid=532053][err] XPCOMGlueLoad error for file /home/playwright/.cache/ms-playwright/firefox-1238/firefox/libxul.so:
[pid=532053][err] libdbus-glib-1.so.2: cannot open shared object file: No such file or directory
[pid=532053][err] Couldn't load XPCOM.
installed firefox and 2nd script ran successfully:
sudo apt-get install firefox

Answer 2

I solved it I was missing this library libgstreamer-plugins-bad1.0-0:amd64