fix: check for src before attempting to add popover

Jacky Zhao

2022-04-06 f9c7cdf928e8068532d2630336a7b08d5085548e

 config.toml

@@ -2,7 +2,7 @@
languageCode = "en-us"
googleAnalytics = "G-XYFD95KB4J"
pygmentsUseClasses = true
relativeURLs = true
relativeURLs = false
disablePathToLower = true
ignoreFiles = [
    "/content/templates/*",