大家帮我看看我这个警告性错误是什么原因。谢谢各位了。
***** Floor No. 3 *****

------------------------------
| total information of floor |
------------------------------

--------------------
| node information |
--------------------

--------------------
| beam information |
--------------------
Warn 76 : Lb < 0.2, Nb= 87 Lb= 0.08
Warn 76 : Lb < 0.2, Nb= 103 Lb= 0.08

----------------------
| column information |
----------------------

--------------------------
| shear-wall information |
--------------------------

***** Floor No. 4 *****

------------------------------
| total information of floor |
------------------------------

--------------------
| node information |
--------------------

--------------------
| beam information |
--------------------
Warn 76 : Lb < 0.2, Nb= 89 Lb= 0.08
Warn 76 : Lb < 0.2, Nb= 105 Lb= 0.08

----------------------
| column information |
----------------------

--------------------------
| shear-wall information |
--------------------------

***** Floor No. 5 *****

------------------------------
| total information of floor |
------------------------------

--------------------
| node information |
--------------------

--------------------
| beam information |
--------------------
Warn 76 : Lb < 0.2, Nb= 89 Lb= 0.08
Warn 76 : Lb < 0.2, Nb= 105 Lb= 0.08

----------------------
| column information |
----------------------

--------------------------
| shear-wall information |
--------------------------

***** Floor No. 6 *****

------------------------------
| total information of floor |
------------------------------

--------------------
| node information |
--------------------

--------------------
| beam information |
--------------------
Warn 76 : Lb < 0.2, Nb= 87 Lb= 0.08
Warn 76 : Lb < 0.2, Nb= 103 Lb= 0.08

----------------------
| column information |
----------------------

--------------------------
| shear-wall information |
--------------------------

***** Floor No. 7 *****

------------------------------
| total information of floor |
------------------------------

--------------------
| node information |
--------------------

--------------------
| beam information |
--------------------
Warn 76 : Lb < 0.2, Nb= 87 Lb= 0.08
Warn 76 : Lb < 0.2, Nb= 103 Lb= 0.08

----------------------
| column information |
----------------------

--------------------------
| shear-wall information |
--------------------------

***** Floor No. 8 *****

------------------------------
| total information of floor |
------------------------------

--------------------
| node information |
--------------------

--------------------
| beam information |
--------------------
Warn 76 : Lb < 0.2, Nb= 87 Lb= 0.08
Warn 76 : Lb < 0.2, Nb= 103 Lb= 0.08

----------------------
| column information |
----------------------

--------------------------
| shear-wall information |
--------------------------

***** Floor No. 9 *****

------------------------------
| total information of floor |
------------------------------

--------------------
| node information |
--------------------

--------------------
| beam information |
--------------------
Warn 76 : Lb < 0.2, Nb= 84 Lb= 0.08
Warn 76 : Lb < 0.2, Nb= 98 Lb= 0.08

----------------------
| column information |
----------------------

--------------------------
| shear-wall information |
--------------------------