Recently I purchased the switching power supply design course but I have some problems in the course.
First of all, after I followed the videos and finished the schematic drawing. I compile the schematic document but I found several warnings. It wrote "Floating Power Object" as shown in the following screen shot:

I don't know whats wrong with my drawing, the problems did not solved even I deleted and re-draw the GND symbol. There are several GND and power symbols contain this warning.
Another problem is that when I updated the PCB document, one of the items showed error as shown in the following screen shot:

I don't know whether this error is related to the warnings when compiling the schematic document. Please help to answer my questions, thank you very much!
First of all, after I followed the videos and finished the schematic drawing. I compile the schematic document but I found several warnings. It wrote "Floating Power Object" as shown in the following screen shot:
I don't know whats wrong with my drawing, the problems did not solved even I deleted and re-draw the GND symbol. There are several GND and power symbols contain this warning.
Another problem is that when I updated the PCB document, one of the items showed error as shown in the following screen shot:
I don't know whether this error is related to the warnings when compiling the schematic document. Please help to answer my questions, thank you very much!
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