2.log

c:\work\projetos\deep\cnn.js:369
			grad_L_t = grad_out_t.x(g).toMatrix('col'),
			                           ^

TypeError: grad_out_t.x(...).toMatrix is not a function
    at Softmax.backprop (c:\work\projetos\deep\cnn.js:369:31)
    at backprop (c:\work\projetos\deep\mnist.js:67:17)
    at train (c:\work\projetos\deep\mnist.js:81:2)
    at Object.<anonymous> (c:\work\projetos\deep\mnist.js:107:23)
    at Module._compile (node:internal/modules/cjs/loader:1083:30)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1112:10)
    at Module.load (node:internal/modules/cjs/loader:948:32)
    at Function.Module._load (node:internal/modules/cjs/loader:789:14)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:72:12)
    at node:internal/main/run_main_module:17:47