rmarkdown html page loaded with warning message <p>I have created simple rmarkdown - flexboard html page, using MASS/painters dataset, preview looks fine, but as soon as view in browser, the html page loads with warning, with below below errors. </p> <p>Please note I have used rpivottable and DT to present painters data. Any guidance would be helpful. </p> <blockquote> <hr> <pre><code>title: "Untitled" output: flexdashboard::flex_dashboard: orientation: columns vertical_layout: fill --- ```{r setup, include=FALSE} library(flexdashboard) </code></pre> <p>``` Column {data-width=650}</p> <hr> </blockquote> <pre><code>### Chart A ```{r} ``` Column {data-width=350} </code></pre> <hr> <pre><code> ### Chart B ```{r} ``` ### Chart C ```{r} ``` </code></pre> <p>Webpage error details</p> <blockquote> <p>User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; chromeframe/15.0.874.121; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; MS-RTC LM 8; InfoPath.3; .NET CLR 1.1.4322) Timestamp: Thu, 23 Jun 2016 10:58:22 UTC</p> <p>Message: '$' is undefined Line: 833 Char: 5 Code: 0</p> <p>Message: Object expected Line: 2562 Char: 1 Code: 0</p> <p>Message: Object expected Line: 2599 Char: 1 Code: 0</p> </blockquote> <p><br></p>