What does error message "This image is too big. Please upload a image smaller than {:maxImageSize} x {:maxImageSize} px." mean and how can I solve and fix it.
LinkedIn
As the error says itself you need to upload smaller image but since it doesn't say correct sizes we got them for you here:
All sizes are in pixels.
LinkedIn personal profiles, optimum image sizes
* LinkedIn profile picture size: 400 x 400
*LinkedIn banner or background photo size: 1584 x 396
LinkedIn company pages, optimum image sizes
* LinkedIn company logo size: 300 x 300
* LinkedIn banner / cover photo size: 1128 x 191
LinkedIn posts, optimum image sizes
* LinkedIn post single or multi-image: 1080 x 1080 (square) 1920 x 1080 (portrait)
* LinkedIn article featured image: 1200 x 644
* LinkedIn article banner image: 600 x 322
* LinkedIn image sizes for blog post link images: 1200 x 627
* LinkedIn carousel post: 1080 x 1080 OR 1920 x 1080
* LinkedIn carousel best format: PDF
* LinkedIn video size: 256 x 144 (minimum) to 4096 x 2304 (maximum)
* LinkedIn video file size: 75KB to 200MB
* Maximum LinkedIn video length: 10 minutes
* LinkedIn Stories image size: 1080 x 1920
LinkedIn Events, optimum image sizes
* LinkedIn event logo size: 300 x 300 - square
* LinkedIn event ‘banner’ size: 16:9 ratio so 1600 x 900 pixels works
LinkedIn Groups, optimum image sizes
* LinkedIn groups logo size: 300 x 300
* LinkedIn groups banner size: 1536 x 768