diff --git a/packages/driver/src/cypress/script_utils.js b/packages/driver/src/cypress/script_utils.js
index 4daa4f66f8..b78f18b623 100644
--- a/packages/driver/src/cypress/script_utils.js
+++ b/packages/driver/src/cypress/script_utils.js
@@ -12,7 +12,7 @@ const fetchScript = (scriptWindow, script) => {
 }
 
 const extractSourceMap = ([script, contents]) => {
-  script.fullyQualifiedUrl = `${window.top.location.origin}${script.relativeUrl}`
+  script.fullyQualifiedUrl = `${window.top.location.origin}${script.relativeUrl}`.replace(/ /g, '%20')
 
   const sourceMap = $sourceMapUtils.extractSourceMap(script, contents)
 
diff --git a/packages/reporter/cypress/fixtures/command_error.json b/packages/reporter/cypress/fixtures/command_error.json
index 8c7f4a0fe7..8d3305669d 100644
--- a/packages/reporter/cypress/fixtures/command_error.json
+++ b/packages/reporter/cypress/fixtures/command_error.json
@@ -1,7 +1,7 @@
 {
   "name": "CommandError",
   "message": "`foo` \\`bar\\` **baz** *fizz* ** buzz **",
-  "stack": "Some Error\n        at foo.bar (my/app.js:2:7)\n          at baz.qux (cypress/integration/foo_spec.js:5:2)\n      From previous event:\n        at bar.baz (my/app.js:8:11)\n      ",
+  "stack": "Some Error\n        at foo.bar (my/app.js:2:7)\n          at baz.qux (cypress/integration/foo_spec.js:5:2)\n          at space (cypress/integration/a b.js:34:99)\n      From previous event:\n        at bar.baz (my/app.js:8:11)\n      ",
   "parsedStack": [
     {
       "message": "Some Error",
@@ -35,6 +35,15 @@
       "column": 2,
       "whitespace": "    "
     },
+    {
+      "originalFile": "cypress/integration/a%20b.js",
+      "relativeFile": "cypress/integration/a%20b.js",
+      "absoluteFile": "/me/dev/cypress/integration/a%20b.js",
+      "function": "space",
+      "line": 34,
+      "column": 99,
+      "whitespace": "    "
+    },
     {
       "message": "At previous event:",
       "whitespace": "  "
diff --git a/packages/reporter/cypress/integration/test_errors_spec.ts b/packages/reporter/cypress/integration/test_errors_spec.ts
index 2a1c25efc3..00f6c74c5e 100644
--- a/packages/reporter/cypress/integration/test_errors_spec.ts
+++ b/packages/reporter/cypress/integration/test_errors_spec.ts
@@ -95,20 +95,23 @@ describe('test errors', () => {
 
       cy.get('.runnable-err-stack-trace').within(() => {
         cy.get('.err-stack-line')
-        .should('have.length', 9)
+        .should('have.length', 10)
         .first().should('have.text', 'at foo.bar (my/app.js:2:7)')
 
         cy.get('.err-stack-line')
         .eq(1).should('have.text', '  at baz.qux (cypress/integration/foo_spec.js:5:2)')
 
         cy.get('.err-stack-line')
-        .eq(2).should('have.text', 'At previous event:')
+        .eq(2).should('have.text', '  at space (cypress/integration/a b.js:34:99)')
 
         cy.get('.err-stack-line')
-        .eq(3).should('have.text', '  at bar.baz (http://localhost:1234/me/dev/my/app.js:8:11)')
+        .eq(3).should('have.text', 'At previous event:')
 
         cy.get('.err-stack-line')
-        .eq(4).should('have.text', '  at callFn (cypress://../driver/src/cypress/runner.js:9:12)')
+        .eq(4).should('have.text', '  at bar.baz (http://localhost:1234/me/dev/my/app.js:8:11)')
+
+        cy.get('.err-stack-line')
+        .eq(5).should('have.text', '  at callFn (cypress://../driver/src/cypress/runner.js:9:12)')
       })
     })
 
@@ -124,12 +127,15 @@ describe('test errors', () => {
       cy.contains('View stack trace').click()
 
       cy.get('.runnable-err-stack-trace .runnable-err-file-path')
-      .should('have.length', 2)
+      .should('have.length', 3)
       .first()
       .should('have.text', 'my/app.js:2:7')
 
       cy.get('.runnable-err-stack-trace .runnable-err-file-path').eq(1)
       .should('have.text', 'cypress/integration/foo_spec.js:5:2')
+
+      cy.get('.runnable-err-stack-trace .runnable-err-file-path').eq(2)
+      .should('have.text', 'cypress/integration/a b.js:34:99')
     })
 
     it('does not turn cypress:// files into links', () => {
diff --git a/packages/reporter/src/errors/decode-file-paths.ts b/packages/reporter/src/errors/decode-file-paths.ts
new file mode 100644
index 0000000000..134c90afee
--- /dev/null
+++ b/packages/reporter/src/errors/decode-file-paths.ts
@@ -0,0 +1,12 @@
+import { FileDetails } from '@packages/ui-components'
+
+export function decodeFilePaths (fileDetails: FileDetails) {
+  const { absoluteFile, originalFile, relativeFile } = fileDetails
+
+  return {
+    ...fileDetails,
+    absoluteFile: absoluteFile ? absoluteFile.replace(/%20/g, ' ') : absoluteFile,
+    originalFile: originalFile ? originalFile.replace(/%20/g, ' ') : originalFile,
+    relativeFile: relativeFile ? relativeFile.replace(/%20/g, ' ') : relativeFile,
+  }
+}
diff --git a/packages/reporter/src/errors/error-code-frame.tsx b/packages/reporter/src/errors/error-code-frame.tsx
index 1bcbf1c69d..e167fd5f17 100644
--- a/packages/reporter/src/errors/error-code-frame.tsx
+++ b/packages/reporter/src/errors/error-code-frame.tsx
@@ -4,6 +4,7 @@ import Prism from 'prismjs'
 
 import { CodeFrame } from './err-model'
 import FileNameOpener from '../lib/file-name-opener'
+import { decodeFilePaths } from './decode-file-paths'
 
 interface Props {
   codeFrame: CodeFrame
@@ -24,7 +25,7 @@ class ErrorCodeFrame extends Component<Props> {
 
     return (
       <div className='test-err-code-frame'>
-        <FileNameOpener className="runnable-err-file-path" fileDetails={this.props.codeFrame} />
+        <FileNameOpener className="runnable-err-file-path" fileDetails={decodeFilePaths(this.props.codeFrame)} />
         <pre ref='codeFrame' data-line={highlightLine}>
           <code className={`language-${language || 'text'}`}>{frame}</code>
         </pre>
diff --git a/packages/reporter/src/errors/error-stack.tsx b/packages/reporter/src/errors/error-stack.tsx
index f273eafd46..ba0a0fec1e 100644
--- a/packages/reporter/src/errors/error-stack.tsx
+++ b/packages/reporter/src/errors/error-stack.tsx
@@ -3,6 +3,7 @@ import { observer } from 'mobx-react'
 import React, { ReactElement } from 'react'
 
 import FileNameOpener from '../lib/file-name-opener'
+import { decodeFilePaths } from './decode-file-paths'
 import Err, { ParsedStackFileLine, ParsedStackMessageLine } from './err-model'
 
 const cypressLineRegex = /(cypress:\/\/|cypress_runner\.js)/
@@ -13,21 +14,26 @@ interface Props {
 
 type StringOrElement = string | ReactElement
 
+const isMessageLine = (stackLine: ParsedStackFileLine | ParsedStackMessageLine) => {
+  return (stackLine as ParsedStackMessageLine).message != null
+}
+
 const ErrorStack = observer(({ err }: Props) => {
   if (!err.parsedStack) return <>err.stack</>
 
   // only display stack lines beyond the original message, since it's already
-  // displayed above this
+  // displayed above this in the UI
   let foundFirstStackLine = false
   const stackLines = _.filter(err.parsedStack, (line) => {
     if (foundFirstStackLine) return true
 
-    if ((line as ParsedStackMessageLine).message != null) return false
+    if (isMessageLine(line)) return false
 
     foundFirstStackLine = true
 
     return true
   })
+
   // instead of having every line indented, get rid of the smallest amount of
   // whitespace common to each line so the stack is aligned left but lines
   // with extra whitespace still have it
@@ -42,38 +48,39 @@ const ErrorStack = observer(({ err }: Props) => {
 
   let stopLinking = false
   const lines = _.map(stackLines, (stackLine, index) => {
-    const { originalFile, function: fn, line, column, absoluteFile } = stackLine as ParsedStackFileLine
-    const key = `${originalFile}${index}`
-
     const whitespace = stackLine.whitespace.slice(commonWhitespaceLength)
 
-    if ((stackLine as ParsedStackMessageLine).message != null) {
+    if (isMessageLine(stackLine)) {
+      const message = (stackLine as ParsedStackMessageLine).message
+
       // we append some errors with 'node internals', which we don't want to link
       // so stop linking anything after 'From Node.js Internals'
-      if ((stackLine as ParsedStackMessageLine).message.includes('From Node')) {
+      if (message.includes('From Node')) {
         stopLinking = true
       }
 
-      return makeLine(key, [whitespace, (stackLine as ParsedStackMessageLine).message])
+      return makeLine(`${message}${index}`, [whitespace, message])
     }
 
-    if (stopLinking) {
-      // we have already shown a good link, so no need to make
-      // clickable links deep in the woods of the stack trace
+    const { originalFile, function: fn, line, column, absoluteFile } = stackLine as ParsedStackFileLine
+    const key = `${originalFile}${index}`
+
+    const dontLink = (
+      // don't link to Node files, opening them in IDE won't work
+      stopLinking
+      // sometimes we can determine the file on disk, but if there are no
+      // source maps or the file was transpiled in the browser, there
+      // is no absoluteFile to link to
+      || !absoluteFile
+      // don't link to cypress internals, opening them in IDE won't work
+      || cypressLineRegex.test(originalFile || '')
+    )
+
+    if (dontLink) {
       return makeLine(key, [whitespace, `at ${fn} (${originalFile}:${line}:${column})`])
     }
 
-    // decide if can show "open file in IDE" link or not
-    // sometimes we can determine the file on disk, but if
-    // there are no source maps, or the file was transpiled in the browser
-    // then all we can do is show the link as is without making it clickable
-    if (!absoluteFile) {
-      return makeLine(key, [whitespace, `at ${fn} (${originalFile}:${line}:${column})`])
-    }
-
-    if (cypressLineRegex.test(originalFile || '')) {
-      return makeLine(key, [whitespace, `at ${fn} (${originalFile}:${line}:${column})`])
-    }
+    stackLine = decodeFilePaths(stackLine as ParsedStackFileLine) as ParsedStackFileLine
 
     const link = (
       <FileNameOpener key={key} className="runnable-err-file-path" fileDetails={stackLine as ParsedStackFileLine} />