VisualMetrics not capturing metrics for all transactions. Reporting 0ms for few transactions

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Tool versions - sitespeed 35.7.2 , browsertime - 23.4.3 ,coach -8.0.2.
Browser used - Chrome 131.0.6778.109
OS used - Windows 11. Not using docker
URL used -https://cdev4-dev-ed.develop.lightning.force.com iteration
Issue - VisualMetrics doesnt appear for few transactions. It shows 0ms. Please let us know how to resolve this.
Script (without username /password) is below
Execution logs - Highlighted transaction that are reporting visual metrics with 0ms below.
Script -
/**

• @param {import('browsertime').BrowsertimeContext} context
• @param {import('browsertime').BrowsertimeCommands} commands
  */
  export default async function (context, commands) {
  const seleniumWebdriver = context.selenium.webdriver;
  const By=seleniumWebdriver.By;
  const seleniumDriver = context.selenium.driver;
  const Key={RETURN: '\uE006'}

/Launch/
await commands.navigate('https://cdev4-dev-ed.develop.lightning.force.com');

/Login*/
const usernameElement=await seleniumDriver.findElement(By.xpath('//input[@type="email" and @name="username"]'));
usernameElement.sendKeys('');
const passwordElement=await seleniumDriver.findElement(By.xpath('//input[@type="password" and @name="pw"]'));
passwordElement.sendKeys('');
const loginElement= await seleniumDriver.findElement(By.xpath('//input[@type="submit" and @value="Log In"]'));
await commands.measure.start('Login');
await loginElement.click();
await commands.wait.byPageToComplete();
await commands.measure.stop();

/* Change Console*/
await commands.wait.byTime(2000);
const waffElement=await seleniumDriver.findElement(By.xpath('//div[@class="slds-icon-waffle"]'));
waffElement.click();
await commands.wait.byTime(2000);
const SalesconsoleElement=await seleniumDriver.findElement(By.xpath('//span/p[text()="Sales Console"]'));
SalesconsoleElement.click();
await commands.measure.start('changeconsole');
await commands.wait.byPageToComplete();
await commands.measure.stop();

/* Account search*/
await commands.wait.byTime(5000);
const Searchtextarea=await seleniumDriver.findElement(By.xpath('//button[@aria-label="Search"]'));
Searchtextarea.click();
await commands.wait.byTime(2000);
const Searchval1=await seleniumDriver.findElement(By.xpath('//span[@title="TestAccount01"]'));
Searchval1.click();
await commands.measure.start('AccounttSearch');
//await commands.wait.byXpath('//h2/a[text()="Contacts"]',20000);
await commands.wait.byPageToComplete();
await commands.measure.stop();

/Contact Search/
await commands.wait.byTime(5000);
const glblSearch=await seleniumDriver.findElement(By.xpath('//button[@aria-label="Search"]'));
glblSearch.click();
await commands.wait.byTime(1000);
const Searchval=await seleniumDriver.findElement(By.xpath('//span[@title="Test Perf01"]'));
Searchval.click();
await commands.measure.start('ContactSearch');
await commands.wait.byPageToComplete();
await commands.measure.stop();

/*New case*/

const casebutton= await seleniumDriver.findElement(By.xpath('//button[@name="Global.NewCase"]'));
casebutton.click();
await commands.measure.start('Newcase');
await commands.wait.byPageToComplete();
await commands.measure.stop();

/Cancel/
await commands.wait.byTime(2000);
const cancelval=await seleniumDriver.findElement(By.xpath("//button[@class='slds-button slds-button_neutral cuf-publisherCancelButton uiButton--default uiButton--brand uiButton']"));
cancelval.click();
await commands.measure.start('Cancel');
await commands.wait.byPageToComplete();
await commands.measure.stop();

 /****Logout****/  

const btnUserProfile=await seleniumDriver.findElement(By.xpath('//button[contains(@class,"userProfile-button")]'));
btnUserProfile.click();
await commands.wait.byTime(1000);
const btnLogout=await seleniumDriver.findElement(By.xpath('//a[text()="Log Out"]'));
btnLogout.click();
await commands.measure.start('Logout');
await commands.wait.byPageToComplete();
await commands.measure.stop();

}

Execution
Ran the test without skipping HAR . Following are the execution log. Few transactions highlighted are reported as 0ms.

C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\bin>node sitespeed.js withsel1.mjs --multi --browsertime.iterations 1 --visualMetrics

(node:24460) [DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead.
(Use node --trace-deprecation ... to show where the warning was created)
[2025-02-13 12:02:18] INFO: Versions OS: win32 10.0.22631 nodejs: v21.1.0 sitespeed.io: 35.7.2 browsertime: 23.4.3 coach: 8.0.2
[2025-02-13 12:02:19] INFO: Running tests using Chrome - 1 iteration(s)
 
DevTools listening on ws://127.0.0.1:9222/devtools/browser/892fda64-3297-41a8-9460-4a1a242cb688
[24124:16732:0213/120221.787:ERROR:host_mapping_rules.cc(146)] Failed parsing rule: "MAP cache.pack.google.com 127.0.0.1
[24124:16732:0213/120222.093:ERROR:host_mapping_rules.cc(146)] Failed parsing rule: "MAP cache.pack.google.com 127.0.0.1
[24124:16732:0213/120222.139:ERROR:host_mapping_rules.cc(146)] Failed parsing rule: "MAP cache.pack.google.com 127.0.0.1
[2025-02-13 12:02:23] INFO: Navigating to url https://cdev4-dev-ed.develop.lightning.force.com iteration 1
Created TensorFlow Lite XNNPACK delegate for CPU.
Attempting to use a delegate that only supports static-sized tensors with a graph that has dynamic-sized tensors (tensor#-1 is a dynamic-sized tensor).
[2025-02-13 12:02:30] INFO: Start to measure Login
[2025-02-13 12:02:44] INFO: Take after page complete check screenshot
[2025-02-13 12:02:46] INFO: Take cumulative layout shift screenshot
[2025-02-13 12:02:47] INFO: Take largest contentful paint screenshot
[2025-02-13 12:02:53] INFO: Start to measure changeconsole
[2025-02-13 12:03:03] INFO: Take after page complete check screenshot
[2025-02-13 12:03:04] INFO: Take cumulative layout shift screenshot
[2025-02-13 12:03:05] INFO: Take largest contentful paint screenshot
[2025-02-13 12:03:15] INFO: Start to measure AccounttSearch
[2025-02-13 12:03:24] INFO: Take after page complete check screenshot
[2025-02-13 12:03:25] INFO: Take cumulative layout shift screenshot
[2025-02-13 12:03:26] INFO: Take largest contentful paint screenshot
[2025-02-13 12:03:35] INFO: Start to measure ContactSearch
[2025-02-13 12:03:44] INFO: Take after page complete check screenshot
[2025-02-13 12:03:45] INFO: Take cumulative layout shift screenshot
[2025-02-13 12:03:46] INFO: Take largest contentful paint screenshot
[2025-02-13 12:03:49] INFO: Start to measure Newcase
[2025-02-13 12:03:55] INFO: https://cdev4-dev-ed.develop.lightning.force.com/lightning/r/Contact/003ak00000GZnmDAAT/view has been tested before within the same run, it will get an extra query parameter named browsertime_run. Make sure to use alias to keep track of the URLs
[2025-02-13 12:03:58] INFO: Take after page complete check screenshot
[2025-02-13 12:03:59] INFO: Take cumulative layout shift screenshot
[2025-02-13 12:04:00] INFO: Take largest contentful paint screenshot
[2025-02-13 12:04:05] INFO: Start to measure Cancel
[2025-02-13 12:04:12] INFO: https://cdev4-dev-ed.develop.lightning.force.com/lightning/r/Contact/003ak00000GZnmDAAT/view has been tested before within the same run, it will get an extra query parameter named browsertime_run. Make sure to use alias to keep track of the URLs
[2025-02-13 12:04:13] INFO: Take after page complete check screenshot
[2025-02-13 12:04:14] INFO: Take cumulative layout shift screenshot
[2025-02-13 12:04:16] INFO: Take largest contentful paint screenshot
[2025-02-13 12:04:19] INFO: Start to measure Logout
[2025-02-13 12:04:29] INFO: Take after page complete check screenshot
[2025-02-13 12:04:30] INFO: Take cumulative layout shift screenshot
[2025-02-13 12:04:31] INFO: Take largest contentful paint screenshot
[24448:22940:0213/120434.487:ERROR:command_buffer_proxy_impl.cc(331)] GPU state invalid after WaitForGetOffsetInRange.
[2025-02-13 12:04:36] INFO: Use the visual metrics portable script
[2025-02-13 12:04:36] INFO: Get visual metrics from the video
[2025-02-13 12:04:44] INFO: Use the visual metrics portable script
[2025-02-13 12:04:44] INFO: Get visual metrics from the video
[2025-02-13 12:04:50] INFO: Use the visual metrics portable script
[2025-02-13 12:04:50] INFO: Get visual metrics from the video
[2025-02-13 12:04:55] INFO: Use the visual metrics portable script
[2025-02-13 12:04:55] INFO: Get visual metrics from the video
[2025-02-13 12:04:59] INFO: Use the visual metrics portable script
[2025-02-13 12:04:59] INFO: Get visual metrics from the video
[2025-02-13 12:05:03] INFO: Use the visual metrics portable script
[2025-02-13 12:05:03] INFO: Get visual metrics from the video
[2025-02-13 12:05:07] INFO: Use the visual metrics portable script
[2025-02-13 12:05:07] INFO: Get visual metrics from the video
[2025-02-13 12:05:12] ERROR: Could not add meta data to the HAR, miss page 3
[2025-02-13 12:05:12] ERROR: Could not add meta data to the HAR, miss page 4
[2025-02-13 12:05:12] ERROR: Could not add meta data to the HAR, miss page 5
[2025-02-13 12:05:12] ERROR: Could not add meta data to the HAR, miss page 6
[2025-02-13 12:05:12] INFO: https://cdev4-dev-ed.develop.lightning.force.com/lightning/setup/SetupOneHome/home 35 requests, TTFB: 799ms, firstPaint: 978ms, firstVisualChange: 133ms, FCP: 978ms, DOMContentLoaded: 1.62s, LCP: 2.81s, CLS: 0.0403, TBT: 2.27s, CPUBenchmark: 84ms, Load: 1.67s, speedIndex: 2.05s, visualComplete85: 4.20s, lastVisualChange: 5.67s
[2025-02-13 12:05:12] INFO: https://cdev4-dev-ed.develop.lightning.force.com/lightning/page/home 38 requests, TTFB: 382ms, firstPaint: 602ms, firstVisualChange: 44ms, FCP: 602ms, DOMContentLoaded: 801ms, LCP: 2.00s, CLS: 0.831, TBT: 522ms, CPUBenchmark: 92ms, Load: 846ms, speedIndex: 1.60s, visualComplete85: 1.87s, lastVisualChange: 3.11s
[2025-02-13 12:05:12] INFO: https://cdev4-dev-ed.develop.lightning.force.com/lightning/r/Account/001ak00000tXpYlAAK/view 19 requests, TTFB: 382ms, firstPaint: 602ms, firstVisualChange: 79ms, FCP: 602ms, DOMContentLoaded: 801ms, LCP: 2.00s, CLS: 0.831, TBT: 1.11s, CPUBenchmark: 92ms, Load: 846ms, speedIndex: 307ms, visualComplete85: 1.03s, lastVisualChange: 1.38s
[2025-02-13 12:05:12] INFO: https://cdev4-dev-ed.develop.lightning.force.com/lightning/r/Contact/003ak00000GZnmDAAT/view TTFB: 382ms, firstPaint: 602ms, firstVisualChange: 40ms, FCP: 602ms, DOMContentLoaded: 801ms, LCP: 2.00s, CLS: 0.831, TBT: 1.59s, CPUBenchmark: 78ms, Load: 846ms, speedIndex: 91ms, visualComplete85: 119ms, lastVisualChange: 277ms
[2025-02-13 12:05:12] INFO: https://cdev4-dev-ed.develop.lightning.force.com/lightning/r/Contact/003ak00000GZnmDAAT/view?browsertime_run=2 TTFB: 382ms, firstPaint: 602ms### , ### firstVisualChange: 0ms, FCP: 602ms, DOMContentLoaded: 801ms, LCP: 2.00s, CLS: 0.831, TBT: 1.64s, CPUBenchmark: 97ms, Load: 846ms, speedIndex: 0ms, ### visualComplete85: 0ms, lastVisualChange: 0ms
[2025-02-13 12:05:12] INFO: https://cdev4-dev-ed.develop.lightning.force.com/lightning/r/Contact/003ak00000GZnmDAAT/view?browsertime_run=3 TTFB: 382ms, firstPaint: 602ms, ### firstVisualChange: 0ms, FCP: 602ms, DOMContentLoaded: 801ms, LCP: 2.00s, CLS: 0.831, TBT: 1.64s, CPUBenchmark: 89ms, Load: 846ms, speedIndex: 0ms, ### visualComplete85: 0ms, lastVisualChange: 0ms
[2025-02-13 12:05:12] INFO: https://cdev4-dev-ed.develop.my.salesforce.com/ TTFB: 103ms, firstPaint: 246ms, firstVisualChange: 436ms, FCP: 246ms, DOMContentLoaded: 282ms, LCP: 246ms, CLS: 0.0005, TBT: 389ms, CPUBenchmark: 86ms, Load: 395ms, speedIndex: 874ms, visualComplete85: 1.26s, lastVisualChange: 1.26s
[2025-02-13 12:05:13] ERROR: Could not find the right index 3 for har for url https://cdev4-dev-ed.develop.lightning.force.com/lightning/r/Contact/003ak00000GZnmDAAT/view
[2025-02-13 12:05:13] ERROR: There are pages that misses data. This is in almost all cases caused by that you try to measure a page view but you do not navigate to a new page. Error: PageIndex out of range
at module.exports.pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\har\harCutter.js:18:11)
at pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\index.js:85:12)
at BrowsertimePlugin.processMessage (file:///C:/Tools/node-v21.2.0-win-x64latest/node_modules/sitespeed.io/lib/plugins/browsertime/index.js:282:29)
[2025-02-13 12:05:13] ERROR: Could not generate coach data Error: PageIndex out of range
at module.exports.pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\har\harCutter.js:18:11)
at pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\index.js:85:12)
at BrowsertimePlugin.processMessage (file:///C:/Tools/node-v21.2.0-win-x64latest/node_modules/sitespeed.io/lib/plugins/browsertime/index.js:533:35)
[2025-02-13 12:05:13] ERROR: Could not find the right index 4 for har for url https://cdev4-dev-ed.develop.lightning.force.com/lightning/r/Contact/003ak00000GZnmDAAT/view?browsertime_run=2
[2025-02-13 12:05:13] ERROR: There are pages that misses data. This is in almost all cases caused by that you try to measure a page view but you do not navigate to a new page. Error: PageIndex out of range
at module.exports.pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\har\harCutter.js:18:11)
at pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\index.js:85:12)
at BrowsertimePlugin.processMessage (file:///C:/Tools/node-v21.2.0-win-x64latest/node_modules/sitespeed.io/lib/plugins/browsertime/index.js:282:29)
[2025-02-13 12:05:13] ERROR: Could not generate coach data Error: PageIndex out of range
at module.exports.pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\har\harCutter.js:18:11)
at pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\index.js:85:12)
at BrowsertimePlugin.processMessage (file:///C:/Tools/node-v21.2.0-win-x64latest/node_modules/sitespeed.io/lib/plugins/browsertime/index.js:533:35)
[2025-02-13 12:05:13] ERROR: Could not find the right index 5 for har for url https://cdev4-dev-ed.develop.lightning.force.com/lightning/r/Contact/003ak00000GZnmDAAT/view?browsertime_run=3
[2025-02-13 12:05:13] ERROR: There are pages that misses data. This is in almost all cases caused by that you try to measure a page view but you do not navigate to a new page. Error: PageIndex out of range
at module.exports.pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\har\harCutter.js:18:11)
at pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\index.js:85:12)
at BrowsertimePlugin.processMessage (file:///C:/Tools/node-v21.2.0-win-x64latest/node_modules/sitespeed.io/lib/plugins/browsertime/index.js:282:29)
[2025-02-13 12:05:13] ERROR: Could not generate coach data Error: PageIndex out of range
at module.exports.pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\har\harCutter.js:18:11)
at pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\index.js:85:12)
at BrowsertimePlugin.processMessage (file:///C:/Tools/node-v21.2.0-win-x64latest/node_modules/sitespeed.io/lib/plugins/browsertime/index.js:533:35)
[2025-02-13 12:05:13] ERROR: Could not find the right index 6 for har for url https://cdev4-dev-ed.develop.my.salesforce.com/
[2025-02-13 12:05:13] ERROR: There are pages that misses data. This is in almost all cases caused by that you try to measure a page view but you do not navigate to a new page. Error: PageIndex out of range
at module.exports.pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\har\harCutter.js:18:11)
at pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\index.js:85:12)
at BrowsertimePlugin.processMessage (file:///C:/Tools/node-v21.2.0-win-x64latest/node_modules/sitespeed.io/lib/plugins/browsertime/index.js:282:29)
[2025-02-13 12:05:13] ERROR: Could not generate coach data Error: PageIndex out of range
at module.exports.pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\har\harCutter.js:18:11)
at pickAPage (C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\node_modules\coach-core\lib\index.js:85:12)
at BrowsertimePlugin.processMessage (file:///C:/Tools/node-v21.2.0-win-x64latest/node_modules/sitespeed.io/lib/plugins/browsertime/index.js:533:35)
[2025-02-13 12:05:18] INFO: HTML stored in C:\Tools\node-v21.2.0-win-x64latest\node_modules\sitespeed.io\bin\sitespeed-result\withsel1_mjs\2025-02-13-12-02-18

Start by reproducing the supplied Browsertime script with VisualMetrics enabled and compare the execution log with the generated transaction metrics. Trace the VisualMetrics portable-script output and HAR page matching for the repeated Contact URL; done means affected transactions report valid visual metrics and the HAR metadata errors are resolved.